Atomic Number | 76 |
---|---|
Atomic Weight | 190.23 |
Mass Number | 192 |
Group | 8 |
---|---|
Period | 6 |
Block | d |
Protons | 76 p+ |
---|---|
Neutrons | 116 n0 |
Electrons | 76 e- |
Atomic Radius | 130 pm
|
---|---|
Molar Volume | 8.43 cm³/mol
|
Covalent Radius | 129 pm
|
Metallic Radius | 126 pm
|
Ionic Radius | 63 pm
|
Crystal Radius | 77 pm
|
Van der Waals Radius | 216 pm
|
Density | 22.5872 g/cm³
|
Energy | |
Proton Affinity | |
Electron Affinity | 1.1 eV/particle
|
Ionization Energy | 8.43823 eV/particle
|
Heat of Vaporization | 738 kJ/mol
|
Heat of Fusion | 31.7 kJ/mol
|
Heat of Formation | 787 kJ/mol
|
Electrons | |
Electron Shells | 2, 8, 18, 32, 14, 2 |
Valence Electrons | 6 |
Electron Configuration | [Xe] 4f14 5d6 6s2 |
Oxidation States | -4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8 |
Electronegativity | 2.2
|
Electrophilicity | 1.5497236992588812 eV/particle
|
Phases | |
Phase | Solid |
Gas Phase | |
Boiling Point | 5,281.15 K
|
Melting Point | 3,306.15 K
|
Critical Pressure | |
Critical Temperature | |
Triple Point | |
Visual | |
Color | Slate Gray
|
Appearance | silvery, blue cast |
Refractive Index | |
Thermodynamic Properties | |
Thermal Conductivity | |
Thermal Expansion | 0.0000051 1/K
|
Molar Heat Capacity | 24.7 J/(mol K)
|
Specific Heat Capacity | 0.13 J/(g⋅K)
|
Heat Capacity Ratio (Adiabatic Index) | |
Electrical Properties | |
Type | Conductor |
Electrical Conductivity | 12 MS/m
|
Electrical Resistivity | 0.00000008000000000001 m Ω
|
Superconducting Point | 0.66 K
|
Magnetism | |
Type | paramagnetic |
Magnetic Susceptibility (Mass) | 0.0000000006 m³/Kg
|
Magnetic Susceptibility (Molar) | 0.00000000011 m³/mol
|
Magnetic Susceptibility (Volume) | 0.000014
|
Magnetic Ordering | |
Curie Point | |
Neel Point | |
Structure | |
Crystal Structure | Simple Hexagonal (HEX) |
Lattice Constant | 2.74 Å
|
Lattice Angles | π/2, π/2, 2 π/3 |
Mechanical Properties | |
Hardness | 7 MPa
|
Bulk Modulus | |
Shear Modulus | 222 GPa
|
Young Modulus | |
Poisson Ratio | 0.25
|
Speed of Sound | 4,940 m/s
|
Classification | |
Category | Transition metals, Transition metals |
CAS Group | VIIIA |
IUPAC Group | VIII |
Glawe Number | 60 |
Mendeleev Number | 61 |
Pettifor Number | 62 |
Geochemical Class | noble metal |
Goldschmidt Class | siderophile |
Other | |
Gas Basicity | |
Dipole Polarizability | |
C6 Dispersion Coefficient | |
Allotropes | |
Neutron Cross Section | 15
|
Neutron Mass Absorption | 0.0023
|
Quantum Numbers | 5D4 |
Space Group | 194 (P63/mmc) |
Stable Isotopes | 7 |
---|---|
Unstable Isotopes | 36 |
Radioactive Isotopes | 38 |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 161 |
G-Factor | |
Half Life | 640 ± 60 us
|
Spin | 7/2 |
Quadrupole Moment | |
Discovery Year | 2010 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 162 |
G-Factor | 0
|
Half Life | 2.1 ± 0.1 ms
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1989 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 163 |
G-Factor | |
Half Life | 5.7 ± 0.5 ms
|
Spin | 7/2 |
Quadrupole Moment | |
Discovery Year | 1981 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 164 |
G-Factor | 0
|
Half Life | 21 ± 1 ms
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1981 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | 96% |
β+ (β+ decay; β+ = ϵ + e+) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 165 |
G-Factor | |
Half Life | 71 ± 3 ms
|
Spin | 7/2 |
Quadrupole Moment | |
Discovery Year | 1978 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 90% |
β+ (β+ decay; β+ = ϵ + e+) | 10% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 166 |
G-Factor | 0
|
Half Life | 213 ± 5 ms
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1977 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | 83% |
β+ (β+ decay; β+ = ϵ + e+) | 17% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 167 |
G-Factor | |
Half Life | 839 ± 5 ms
|
Spin | 7/2 |
Quadrupole Moment | |
Discovery Year | 1977 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 51% |
β+ (β+ decay; β+ = ϵ + e+) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 168 |
G-Factor | 0
|
Half Life | 2.1 ± 0.1 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1977 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 57% |
α (α emission) | 43% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 169 |
G-Factor | |
Half Life | 3.46 ± 0.11 s
|
Spin | 5/2 |
Quadrupole Moment | |
Discovery Year | 1972 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 86.3% |
α (α emission) | 13.7% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 170 |
G-Factor | 0
|
Half Life | 7.37 ± 0.18 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1972 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 90.5% |
α (α emission) | 9.5% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 171 |
G-Factor | |
Half Life | 8.3 ± 0.2 s
|
Spin | 5/2 |
Quadrupole Moment | |
Discovery Year | 1972 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | % |
α (α emission) | 1.8% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 172 |
G-Factor | 0
|
Half Life | 19.2 ± 0.9 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1971 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 98.81% |
α (α emission) | 1.19% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 173 |
G-Factor | |
Half Life | 22.4 ± 0.9 s
|
Spin | 5/2 |
Quadrupole Moment | |
Discovery Year | 1971 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 99.6% |
α (α emission) | 0.4% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 174 |
G-Factor | 0
|
Half Life | 44 ± 4 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1971 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
α (α emission) | 0.024% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 175 |
G-Factor | |
Half Life | 1.4 ± 0.1 m
|
Spin | 5/2 |
Quadrupole Moment | |
Discovery Year | 1972 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 176 |
G-Factor | 0
|
Half Life | 3.6 ± 0.5 m
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1970 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 177 |
G-Factor | |
Half Life | 3 ± 0.2 m
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1970 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 178 |
G-Factor | 0
|
Half Life | 5 ± 0.4 m
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1967 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 179 |
G-Factor | |
Half Life | 6.5 ± 0.3 m
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1968 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 180 |
G-Factor | 0
|
Half Life | 21.5 ± 0.4 m
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1967 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 181 |
G-Factor | |
Half Life | 105 ± 3 m
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1966 |
Parity | - |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 182 |
G-Factor | 0
|
Half Life | 21.84 ± 0.2 h
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1950 |
Parity | + |
Decay Mode | Intensity |
---|---|
ϵ (electron capture) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 183 |
G-Factor | 0.17644444444444 ± 0.0031111111111111
|
Half Life | 13 ± 0.5 h
|
Spin | 9/2 |
Quadrupole Moment | 3.1 ± 0.3
|
Discovery Year | 1950 |
Parity | + |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | 100% |
Abundance | Radioactive ☢️ 0.02 ± 0.02
|
---|---|
Relative Atomic Mass | |
Mass Number | 184 |
G-Factor | 0
|
Half Life | 11.2 ± 2.3 Ty
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1937 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
2β+ (double β+ decay) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 185 |
G-Factor | |
Half Life | 92.95 ± 0.09 d
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1947 |
Parity | - |
Decay Mode | Intensity |
---|---|
ϵ (electron capture) | 100% |
Abundance | Radioactive ☢️ 1.59 ± 0.64
|
---|---|
Relative Atomic Mass | |
Mass Number | 186 |
G-Factor | 0
|
Half Life | 2 ± 1.1 Py
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1931 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | 100% |
Abundance | 1.96 ± 0.17
|
---|---|
Relative Atomic Mass | |
Mass Number | 187 |
G-Factor | |
Half Life | |
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1931 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
Abundance | 13.24 ± 0.27
|
---|---|
Relative Atomic Mass | |
Mass Number | 188 |
G-Factor | 0
|
Half Life | |
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1931 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
Abundance | 16.15 ± 0.23
|
---|---|
Relative Atomic Mass | |
Mass Number | 189 |
G-Factor | |
Half Life | |
Spin | 3/2 |
Quadrupole Moment | 0.86 ± 0.03
|
Discovery Year | 1931 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
Abundance | 26.26 ± 0.2
|
---|---|
Relative Atomic Mass | |
Mass Number | 190 |
G-Factor | 0
|
Half Life | |
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1931 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 191 |
G-Factor | 0.21333333333333 ± 0.0066666666666667
|
Half Life | 14.99 ± 0.02 d
|
Spin | 9/2 |
Quadrupole Moment | 2.53 ± 0.16
|
Discovery Year | 1940 |
Parity | - |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | 40.78 ± 0.32
|
---|---|
Relative Atomic Mass | |
Mass Number | 192 |
G-Factor | 0
|
Half Life | |
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1931 |
Parity | + |
Decay Mode | Intensity |
---|---|
2β− (double β− decay) | % |
α (α emission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 193 |
G-Factor | 0.48666666666667 ± 0.0013333333333333
|
Half Life | 29.83 ± 0.018 h
|
Spin | 3/2 |
Quadrupole Moment | |
Discovery Year | 1940 |
Parity | - |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 194 |
G-Factor | 0
|
Half Life | 6 ± 0.2 y
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1951 |
Parity | + |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 195 |
G-Factor | |
Half Life | 6.5 ± 1.1 m
|
Spin | 3/2 |
Quadrupole Moment | |
Discovery Year | 2004 |
Parity | - |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 196 |
G-Factor | 0
|
Half Life | 34.9 ± 0.2 m
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1977 |
Parity | + |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 197 |
G-Factor | |
Half Life | 93 ± 7 s
|
Spin | 5/2 |
Quadrupole Moment | |
Discovery Year | 2003 |
Parity | - |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 198 |
G-Factor | 0
|
Half Life | 125 ± 28 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 2008 |
Parity | + |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 199 |
G-Factor | |
Half Life | 6 ± 3 s
|
Spin | 5/2 |
Quadrupole Moment | |
Discovery Year | 2008 |
Parity | - |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 200 |
G-Factor | 0
|
Half Life | 7 ± 4 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 2005 |
Parity | + |
Decay Mode | Intensity |
---|---|
β− (β− decay) | 100% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 201 |
G-Factor | |
Half Life | |
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 2009 |
Parity | - |
Decay Mode | Intensity |
---|---|
β− (β− decay) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 202 |
G-Factor | 0
|
Half Life | |
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 2009 |
Parity | + |
Decay Mode | Intensity |
---|---|
β− (β− decay) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 203 |
G-Factor | |
Half Life | |
Spin | 9/2 |
Quadrupole Moment | |
Discovery Year | 2012 |
Parity | + |
Decay Mode | Intensity |
---|---|
β− (β− decay) | % |
β− n (β−-delayed neutron emission) | % |
Osmium was discovered in 1803 by English chemist Smithson Tennant in London. Chemists who studied platinum dissolved it in aqua regia to create soluble salts and observed a small amount of a dark, insoluble residue. Smithson Tennant analyzed the insoluble residue and concluded that it must contain a new metal. From the Greek word osme, meaning smell
Discoverers | Smithson Tenant |
---|---|
Discovery Location | England |
Discovery Year | 1804 |
Etymology (Name Origin) | Greek: osmê (odor). |
Pronunciation | OZ-mi-em (English) |
Obtained from the same ores as platinum.
Abundance | |
---|---|
Abundance in Earth's crust | 0.0015 mg/kg
|
Abundance in Oceans | |
Abundance in Human Body | |
Abundance in Meteor | 0.000066 %
|
Abundance in Sun | 0.0000002 %
|
Abundance in Universe | 0.0000003 %
|
1 | s | 1.4701 |
2 | p | 4.4502 |
2 | s | 19.8502 |
3 | d | 13.5253 |
3 | p | 21.7483 |
3 | s | 22.5727 |
4 | d | 37.142 |
4 | f | 38.8472 |
4 | p | 34.856 |
4 | s | 33.9048 |
5 | d | 58.003 |
5 | p | 53.09 |
5 | s | 50.905 |
6 | s | 65.677 |