Berkelium is a member of the actinide and transuranium element series. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. The chemical symbol for Aluminum is Al. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. The chemical symbol for Dysprosium is Dy. Tungsten is an intrinsically brittle and hard material, making it difficult to work. The chemical symbol for Chromium is Cr. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. The chemical symbol for Potassium is K. Potassium was first isolated from potash, the ashes of plants, from which its name derives. It has an estimated density of 40.7 x 103 kg/m3. Radon is a radioactive, colorless, odorless, tasteless noble gas. Titanium can be used in surface condensers. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. Since nucleons (protons and neutrons) make up most of the mass of ordinary atoms, the density of normal matter tends to be limited by how closely we can pack these nucleons and depends on the internal atomic structure of a substance. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. It is classified as a nonmetal.Phosphorus atoms have 15 electrons and 15 protons with 5 … Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. The chemical symbol for Scandium is Sc. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. It may seem, that the space and in fact the matter is empty, but it is not. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. Astatine is the rarest naturally occurring element on the Earth’s crust. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. The Standard English unit is pounds mass per cubic foot (lbm/ft3). The chemical symbol for Promethium is Pm. Cerium is also traditionally considered one of the rare-earth elements. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbørn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2020 Periodic Table | All Rights Reserved |. Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. Atomic number of Phosphorus is 15 and it is indicated by the symbol is P. P belongs to the nitrogen family. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Discoverer: Davy, Sir H. and Thénard, L.-J. The chemical symbol for Astatine is At. In nuclear reactors, promethium equilibrium exists in power operation. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. The chemical symbol for Xenon is Xe. It is the heaviest essential mineral nutrient. It is a soft, silvery-white alkali metal. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. Discoverer: Priestley, Joseph and Scheele, Carl Wilhelm, Discoverer: Ramsay, William and Travers, Morris, Discoverer: Ramsay, Sir William and Strutt, John (Lord Rayleigh), Discoverer: Del Rio, Andrés Manuel (1801) and Sefström, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-Émile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segrè, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Müller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. It's Toxic by inhalation, ingestion, or skin contact. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. One atomic mass unit is equal to 1.66 x 10-24 grams. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. Formula weight or, molecular weight or molar mass is what you need. The chemical symbol for Thallium is Tl. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. It is an intensive property, which is mathematically defined as mass divided by volume: In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Density is defined as the mass per unit volume. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. Neutron number is rarely written explicitly in nuclide symbol notation, but appears as a subscript to the right of the element symbol. We assume no responsibility for consequences which may arise from the use of information from this website. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure.  The density of Hassium results from its high atomic weight and from the significant decrease in ionic radii of the elements in the lanthanide series, known as lanthanide and actinide contraction. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. al. The unit of measure for mass is the atomic mass unit (amu) . Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. The most stable known isotope, 269Hs, has a half-life of approximately 9.7 seconds. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. This dependence is usually expressed by the coefficient of linear or volume expansion. Other countries or reg… The chemical symbol for Radon is Rn. Since nucleons (protons and neutrons) make up most of the mass of ordinary atoms, the density of normal matter tends to be limited by how closely we can pack these nucleons and depends on the internal atomic structure of a substance. thus 1 mole of phosphorus has 30.974 grams, but there are 6.022 x 10^-23 atoms in one mole. Therefore, we cannot determine the neutron number of uranium, for example. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. Feel free to ask a question, leave feedback or take a look at one of our articles. Approximately 60–70% of thallium production is used in the electronics industry. Phosphorus is a chemical element with the symbol P and atomic number 15. The atomic mass is carried by the atomic nucleus, which occupies only about 10-12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. ChEBI Phosphorus P-32 is a radioactive isotope of phosphorus with beta particle-emitting radiocytotoxic activity. Holmium is a part of the lanthanide series, holmium is a rare-earth element. Uranium is a silvery-white metal in the actinide series of the periodic table. The chemical symbol for Zirconium is Zr. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. One atomic mass unit is equal to 1.66 x 10-24 grams. Consider the following data for phosphorus: atomic mass 30.974 8 mol electronegativity 2.19 electron affinity 7 kJ mol ionization energy 1011.8 ko mol heat of fusion KJ 0.64 mol You may find additional useful data in the ALEKS Data tab. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Copyright 2020 Periodic Table | All Rights Reserved |. Neptunium is the first transuranic element. The unit of measure for mass is the atomic mass unit (amu). Phosphorus. 1) You may use almost everything for non-commercial and educational use. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. The chemical symbol for Bromine is Br. The bulk properties of astatine are not known with any certainty. Melting point of Phosphorus is 44 (P4) °C and its the boiling point is 280 (P4) °C. The chemical symbol for Tin is Sn. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. The chemical symbol for Gold is Au. The chemical symbol for Calcium is Ca. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. The chemical symbol for Yttrium is Y. Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a “rare-earth element”. Europium is one of the least abundant elements in the universe. We realize that the basics in the materials science can help people to understand many common problems. We use cookies to ensure that we give you the best experience on our website. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. The chemical symbol for Iridium is Ir. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. Mass was no longer considered unchangeable in the closed system. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. The chemical symbol for Fluorine is F. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. The standard SI unit is kilograms per cubic meter (kg/m3). Elemental sulfur is a bright yellow crystalline solid at room temperature. Isotope Mass (amu) Percent Abundance Phosphorus-29 29 5% Phosphorus-31 31 71% Phosphorus-32 32 24%. This is often expressed as a decimal number on the periodic table. The difference between the neutron number and the atomic number is known as the neutron excess: D = N – Z = A – 2Z. 1) You may use almost everything for non-commercial and educational use. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Phase at room temperature: Solid 6. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Phosphorus is a monoisotopic element and its atomic weight is determined solely by its isotope 31 P. The Commission last revised the standard atomic weight of phosphorus in 2013 based on the latest Atomic Mass Evaluation by IUPAP. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Phosphorus is an element of great biological value. The chemical symbol for Nickel is Ni. Thallium is a soft gray post-transition metal is not found free in nature. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. The chemical symbol for Gadolinium is Gd. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. The chemical symbol for Germanium is Ge. Atomic mass of Phosphorus is 30.9738 u. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. Atomic weight of Phosphorus is 30.973762 u or g/mol. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. This variation is typically small for solids and liquids but much greater for gases. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. The atomic mass is the mass of an atom.  It is a synthetic element (first synthesised at Hasse in Germany) and radioactive. Titanium is a lustrous transition metal with a silver color, low density, and high strength. Neodymium is a soft silvery metal that tarnishes in air. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Our Website follows all legal requirements to protect your privacy. Typical densities of various substances are at atmospheric pressure. The chemical symbol for Barium is Ba. The chemical symbol for Cerium is Ce. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Its extreme rarity in the Earth’s crust, comparable to that of platinum. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. The difference is a measure of the nuclear binding energy which holds the nucleus together. The chemical symbol for Actinium is Ac. Relative atomic mass: 30.973 761 998(5) Phosphorus was discovered by Hennig Brandt (DE) in 1669. Iron is a metal in the first transition series. Arsenic is a metalloid. The chemical symbol for Californium is Cf. The chemical symbol for Lanthanum is La. It forms various compounds and is present in large variety of minerals. Einsteinium is the seventh transuranic element, and an actinide. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. The chemical symbol for Molybdenum is Mo. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. The chemical symbol for Neptunium is Np. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Particle locations in quantum mechanics are not at an exact position, they are described by a probability density function. See also: Atomic Mass Number â Does it conserve in a nuclear reaction? Lead is soft and malleable, and has a relatively low melting point. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure.The chemical symbol for Phosphorus is P. Atomic Mass of Phosphorus. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Silicon – Periodic Table – Atomic Number – Mass – Radius – Density, Chlorine – Periodic Table – Atomic Number – Mass – Radius – Density. The size and mass of atoms are so small that the use of normal measuring units, while possible, is often inconvenient. Phosphorus-32 atom is the radioactive isotope of phosphorus with relative atomic mass 31.973907 and half-life of 14.26 days. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. a. Phosphorus-32, a radioactive isotope of phosphorus-31 (atomic number 15), undergoes a form of radioactive decay whereby a neutron turns into a proton, which is retained in … It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Therefore, the effective nuclear charge towards the outermost electrons increases, drawing the outermost electrons closer. But its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. Element Phosphorus (P), Group 15, Atomic Number 15, p-block, Mass 30.974. 2) You may not distribute or commercially exploit the content, especially on another website. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. Name: Phosphorus Symbol: P Atomic Number: 15 Atomic Mass: 30.97376 amu Melting Point: 44.1 °C (317.25 K, 111.38 °F) Boiling Point: 280.0 °C (553.15 K, 536.0 °F) Number of Protons/Electrons: 15 Number of Neutrons: 16 Classification: Non-metal Crystal Structure: Monoclinic Density @ 293 K: 1.82 g/cm 3 Color: white Atomic Structure Gold is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. It has an estimated density of 40.7 x 103 kg/m3. Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. The chemical symbol for Indium is In. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. Neon is a chemical element with atomic number 10 which means there are 10 protons and 10 electrons in the atomic structure. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. The atomic mass is carried by the atomic nucleus, which occupies only about 10-12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. The Cookies Statement is part of our Privacy Policy. It is even less abundant than the so-called rare earths. Nuclides that have the same neutron number but a different proton number are called isotones. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Mass numbers of typical isotopes of Phosphorus are 31. The chemical symbol for Caesium is Cs. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. The chemical symbol for Neon is Ne. Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). The Van der Waals radius, rw, of an atom is the radius of an imaginary hard sphere representing the distance of closest approach for another atom. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. Platinum is one of the least reactive metals. In minerals, phosphorus generally occurs as phosphate. Atomic Mass Number â Does it conserve in a nuclear reaction? The information contained in this website is for general information purposes only. It is the 6thmost abundant element in the living systems. Sodium is a soft, silvery-white, highly reactive metal. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Do a quick conversion: 1 grams Phosphorus = 0.03228539149637 mole using the molecular weight calculator and the molar mass of P. The chemical symbol for Francium is Fr. The chemical symbol for Silicon is Si. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Thulium is an easily workable metal with a bright silvery-gray luster. Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. In fact their absorption cross-sections are the highest among all stable isotopes. The chemical symbol for Lutetium is Lu. The chemical symbol for Mercury is Hg. As a result of this expansion, the density of most materials decreases. Lead is a heavy metal that is denser than most common materials. Boiling point: 536.9 F (280.5 C) 8. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. The chemical symbol for Antimony is Sb. Carbon is one of the few elements known since antiquity. Caesium has physical and chemical properties similar to those of rubidium and potassium. The chemical symbol for Thorium is Th. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. The chemical symbol for Bismuth is Bi. The chemical symbol for Curium is Cm. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. According to the Einstein relationship (E=mc2), this binding energy is proportional to this mass difference and it is known as the mass defect. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. The part of the atom where the electrons CANNOT be found is the. As an element, phosphorus exists in two major formsâwhite phosphorus and red phosphorusâbut because it is highly reactive, phosphorus is never found as a free element on Earth. The number of electrons in each elementâs electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. The chemical symbol for Tantalum is Ta. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Although neodymium is classed as a rare earth, it is a fairly common element. It occurs on Earth as the decay product of various heavier elements. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). Since the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance, it is obvious, the density of a substance strongly depends on its atomic mass and also on the atomic number density (N; atoms/cm3). Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. Atomic Number â Does it conserve in a nuclear reaction? It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. The Standard English unit is pounds mass per cubic foot (lbm/ft3). The chemical symbol for Osmium is Os. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. Its boiling point is the lowest among all the elements. Consequently, the smallest atom is helium with a radius of 32 pm, while one of the largest is caesium at 225 pm. All of its isotopes are radioactive. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. In words, the density (Ï) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. Due to the quantum nature of electrons, the electrons are not point particles, they are smeared out over the whole atom. e. It has 8 electrons in its outer electron shell. We can determine the neutron number of certain isotope. Californium is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium). Phosphorus P Element 15 Mass Number: 31 Atomic weight: 30.97 g/mol Atomic number (Z): 15 Electrons: 15 Protons: 15 Neutrons: 16 Period: 3 Group: 15 Block: p Average atomic mass is calculated by taking the average of the masses of the isotopes of an element. For uranium atom, the Van der Waals radius is about 186 pm = 1.86 Ã10â10m. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. It is fairly soft and slowly tarnishes in air. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. The atomic mass is the mass of an atom. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. The chemical symbol for Uranium is U. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Phosphorus vapor just above its boiling point of 280.5°C consists of tetratomic molecules in a tetrahedral form in contrast to its higher temperature form with is diatomic and similar to the nitrogen diatomic form. www.nuclear-power.net. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. For Phosphorus, the chemical symbol is P. Atomic Mass of Phosphorus. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. Atomic mass of Phosphorus is 30.9738 u. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. These electrons together weigh only a fraction (let say 0.05%) of entire atom. The chemical symbol for Polonium is Po. As a result, the electron cloud contracts and the atomic radius decreases. The chemical symbol for Silver is Ag. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. 30.974 is the molar mass of phosphorus. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. The difference is a measure of the nuclear binding energy which holds the nucleus together. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. What is the average atomic mass of this element? Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. The atomic mass of phosphorus is 30.973762 u. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. The chemical symbol for Palladium is Pd. The chemical symbol for Fermium is Fm. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. It is occasionally found in native form as elemental crystals. It is one of the least reactive chemical elements and is solid under standard conditions. If you continue to use this site we will assume that you are happy with it. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. The most common source of phosphorus is calcium phosphate that is present in rocks. The chemical symbol for Ruthenium is Ru. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. Its properties are thus intermediate between those of chlorine and iodine. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Hassium is a chemical element with symbol Hs and atomic number 108. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Phosphorus is very poisonous, 50 mg constituting an approximate fatal dose. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. The chemical symbol for Helium is He. Chlorine is a yellow-green gas at room temperature. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. Tin is a post-transition metal in group 14 of the periodic table. The chemical symbol for Erbium is Er. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Atomic Number of Phosphorus is 15.. Chemical symbol for Phosphorus is P. Number of protons in Phosphorus is 15. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. The chemical symbol for Phosphorus is P.. Atomic Mass of Phosphorus. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. Nickel belongs to the transition metals and is hard and ductile. Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. The chemical symbol for Rubidium is Rb. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Only about 5×10−8% of all matter in the universe is europium. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. The other isotopes from mass 24 to mass 46 have been synthesized by appropriate nuclear reactions.All of these are radioactive with relatively short half-lives. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. Our Website follows all legal requirements to protect your privacy. Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. Atomic mass is defined as the number of protons and neutrons in an atom where the mass of each proton and neutron is approximately 1 amu … Therefore, there are various non-equivalent definitions of atomic radius. The nucleus is composed of protons and neutrons. 113Cd has specific absorption cross-section. Under standard conditions, it is the lightest metal and the lightest solid element. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. As for the position where to find phosphorus in the periodic table of the elements, phosphorus is in group 15 and period 3. According to the Jefferson Lab, the properties of phosphorus are: 1. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. The chemical symbol for Praseodymium is Pr. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Phosphorus has 15 protons and electrons in its structure. The standard SI unit is kilograms per cubic meter (kg/m3). Increasing the pressure on an material (especially for liquids or gases) decreases the volume of the object and thus increases its density via the atomic number density. Compressibility (also known as the coefficient of compressibility is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. The chemical symbol for Krypton is Kr. The atomic radii decrease across the periodic table because as the atomic number increases, the number of protons increases across the period, but the extra electrons are only added to the same quantum shell. The densest material found on earth is the metal osmium, but its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. Fermium is a member of the actinide series. The chemical symbol for Copper is Cu. The chemical symbol for Neodymium is Nd. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Arsenic, Antimony, Bismuth and Moscovium are the other elements in the nitrogen family. Density is defined as the mass per unit volume. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. The chemical symbol for Thulium is Tm. But this âhugeâ space is occupied primarily by electrons, because the nucleus occupies only about 1721Ã10â45 m3 of space. Major advantage of lead shield is in its compactness due to its higher density. Each nuclide is denoted by chemical symbol of the element (this specifies Z) with tha atomic mass number as supescript. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). The chemical symbol for Niobium is Nb. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. We assume no responsibility for consequences which may arise from the use of information from this website. Holmium is a relatively soft and malleable silvery-white metal. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Atomic number (number of protons in the nucleus): 15 2. The mass number of of atoms in an element is equal to the sum total of the number of neutrons and protons. The chemical symbol for Hafnium is Hf. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Pure germanium is a semiconductor with an appearance similar to elemental silicon. For example, the neutron number of uranium-238 is 238-92=146. The chemical symbol for Platinum is Pt. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. Therefore the space in an atom (between electrons and an atomic nucleus) is not empty, but it is filled by a probability density function of electrons (usually known as  âelectron cloudâ). The chemical symbol for Cadmium is Cd. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Neptunium metal is silvery and tarnishes when exposed to air. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. The chemical symbol for Lithium is Li. Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. The largest natural reserves of phosphorus are present in Arab region. Atomic Number of Phosphorus. Atomic weight (average mass of the atom): 30.973762 4. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. The chemical symbol for Lawrencium is Lr. Francium is an alkali metal, that has one valence electron. The chemical symbol for Berkelium is Bk. and Gay-Lussac, L.-J. It has a concentration in the Earth's crust of about one gram per kilogram (compare copper at about 0.06 grams). Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. The Cookies Statement is part of our Privacy Policy. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. Phosphorus is a low melting-point non-metal which occurs in several forms. Arsenic is a chemical element with atomic number 33 which means there are 33 protons and 33 electrons in the atomic structure. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin.