osmium atomic mass

Osmium has a bluish-silvery lustre. The mean radius of osmium is 130 pm, its atomic radius or Bohr radius is 185 pm, and its covalent radius is 128 pm. 190.2 g.mol-1. Osmium is a lustrous & silvery metal taking a spot in the periodic table with an atomic number of 76. Osmium has the atomic number 76 and an atomic mass of 190.23 u. In 1969, the Commission recommended A r (Os) = 190.2(l). Atomic number. It has the lowest vapor pressure and the highest melting point of the platinum group. Check my Elements Comprehensive List. The other natural isotope, 186 Os, has an extremely long half-life (2×10 15 years) and for practical purposes can be considered to be stable as well. Osmium is non-toxic in its crystalline form as long as a temperature of 400 °C is not exceeded. The mass of an atom is determined by how many heavy particles (protons and neutrons) are in the nucleus. Atomic mass. Osmium Element: Osmium Element in Periodic Table | Atomic Number Atomic Mass In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … Atomic Mass 190,23 Learn more about the atomic mass. The most abundant stable isotope is osmium-192. The chemical symbol for Osmium is Os. Learn the uses of osmium, density of osmium & many more. The chemical element Osmium is classed as hard, brittle, bluish-white transition metal.Its atomic number is 76 and represented by the symbol Os. Electronegativity according to Pauling Density is determined by mass over volume. Osmium has an atomic mass of 190.23 u. At this time, osmium had the largest uncertainty among all standard atomic weights, equalled with lead (for which, however, the atomic weight is affected by natural variability, not applicable to osmium). The electron configuration of osmium is [Xe] 4f145d66s2. Osmium has seven naturally occurring isotopes. It is very densest metal, even little more than iridium (22.56 g/cm 3).. Does The Following Reaction Absorb Or Relcasc Cnergy? Its electron configuration is [Xe] 4f14 5d6 6s2. 76. Electrons are lighter by a factor of almost 2000 so don’t really matter. chemical properties, health and environmental effects of osmium. Name Origin Greek: osmê (odor). Mol Heat Of Fusion 31. Video Are you having trouble understanding the basics of atomic elements? Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. Osmium metal is a bluish white, lustrous, extremely hard, and brittle even at high temperatures. Isotopes of Osmium. Mol You May Find Additional Useful Data In The ALEKS Data Tab. REFERENCES [1]. There are six stable isotopes of osmium, osmium-184, osmium-187, osmium-188, osmium-189, osmium-190 and osmium-192. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a … Question: Consider The Following Data For Osmium: Atomic Mass 190.23 2 Mol Electronegativity 2.20 Electron Affinity 106.1 Mol KJ Ionization Energy 840. The electronic configuration of the elements determines the way in which the electrons are structured in the atoms of an element. State at 20 °C Solid Discovery Discovered By: Smithson Tenant Year: 1804 Location: England Want to learn more details and data about Osmium (Os)? Osmium (76 Os) has seven naturally occurring isotopes, six of which are stable: 184 Os, 187 Os, 188 Os, 189 Os, 190 Os, and (most abundant) 192 Os. ››More information on molar mass and molecular weight. The radioactive isotope of osmium is osmium-186 and has a very long half-life (2 × 10 15 years). ( protons and 76 electrons in the atoms of an element of is! 4F14 5d6 6s2 more than iridium ( 22.56 g/cm 3 ) 76 which means there 76. 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