Molar mass of phosphorus periodic table3/31/2024 ![]() The formation of teeth and bones is the main function of phosphorus. These days, four forms of phosphorus are generally used- black, white, violet, and red. The relative atomic mass of an element is calculated by determining the average atomic mass of its isotopes by keeping the carbon-12 isotope as a standard. The atomic mass of elements like fluorine and beryllium is equal to their atomic weight as they have only one isotope that occurs in nature. It lacks a unit and can be defined as the ratio of the atomic masses of the element’s isotopes found in nature to 1/12th of the mass of carbon-12 isotopes. Normally, the weight of an object depends on the gravitational force, unlike the atomic weight, which has nothing to do with it. Therefore, its atomic mass is twelve amu. The isotope of carbon called carbon-12, which is used as a standard, is composed of six neutrons and six protons. The mass of electrons in an atom is negligible as they are too tiny compared to neutrons and protons. ![]() The mass of each neutron and proton approximately equals one atomic mass unit. Atomic mass can be defined as the number of neutrons and protons an atom is composed of. Phosphorus has an atomic mass of about 30.973762 u. The atomic number of phosphorus is 15, meaning its atomic structure has 15 protons and 15 electrons. Due to its extreme reactiveness, the element phosphorus is not found freely in the atmosphere under normal circumstances. ![]() 1995 - 2024.For thousands of years, the periodic table acknowledged the presence of phosphorus, but it was in 1669 that it was recognised as a separate element and given a name by the chemist Brandt. Periodic Table of Elements - Phosphorus - P. If you need to cite this page, you can copy this text: This database focuses on the most common chemical compounds used in the home and industry. Molar mass calculations are explained and there is a JavaScript calculator to aid calculations. Molar Mass Calculations and Javascript Calculator.Introduces stoichiometry and explains the differences between molarity, molality and normality. Related ResourcesĪnswers many questions regarding the structure of atoms. Common Chemical Compounds of Phosphorus ReferencesĪ list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.Necrosis of the jaw, also called phossy-jaw, is caused by chronic exposure to white phosphorus. Additional Notes: White phosphorus is much more toxic than red phosphorus.Uses of Phosphorus: Used in the production of fertilizers, fireworks, matches, pesticides, toothpaste and detergents.Primary mining areas are Russia, USA, Morocco, Tunisia, Tongo and Nauru. Annual world wide production is around 153,000,000 tons. Sources of Phosphorus: Found most often in phosphate rock.Name Origin: Greek: phôs (light) and phoros (bearer).70kg human: 780 g Who / Where / When / How Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances. Target Organs: Eyes, skin, respiratory system, liver, kidneys, jaw, teeth, blood.Routes of Exposure: Inhalation Ingestion Skin and/or eye contact.Vapor Pressure = C Regulatory / Health.Enthalpy of Vaporization: 12.43 kJ/mole.Enthalpy of Atomization: 314.6 kJ/mole 25☌.Description: Soft white waxy solid, brownish-red powder or black solid.Conductivity Electrical: 1.0E -17 10 6/cm Ω.Coefficient of lineal thermal expansion/K -1: 124.5E -6.Valence Electron Potential (-eV): 190 Physical Properties of Phosphorus.Incompatibilities: Air, oxidizers (including elemental sulfur & strong caustics), halogens.Electronegativity: 2.19 (Pauling) 2.06 (Allrod Rochow). ![]() Electrochemical Equivalent: 0.23113g/amp-hr.Valence Electrons: 3s 2p 3 Electron Dot Model.Number of Neutrons (most common/stable nuclide): 16.Number of Electrons (with no charge): 15.Electrons per Energy Level: 2,8,5 Shell Model.Electron Configuration: 1s 2 2s 2p 6 3s 2p 3.Cross Section (Thermal Neutron Capture) σ a/ barns : 0.172.Swedish: Fosfor Atomic Structure of Phosphorus.Series: Nonmetals Phosphorus's Name in Other Languages. ![]()
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