Input interpretation
heaviest element | by density
Result
osmium (22.59 g/cm^3 (grams per cubic centimeter))
Periodic table location
Periodic table location
Image
Image
Basic elemental properties
![atomic symbol | Os atomic number | 76 short electronic configuration | [Xe]6s^24f^145d^6 Aufbau diagram | 5d 4f 6s block | d group | 8 period | 6 atomic mass | 190.23 u (unified atomic mass units)](../image_source/3405b69d1a42eb11ad850706d67f4173.png)
atomic symbol | Os atomic number | 76 short electronic configuration | [Xe]6s^24f^145d^6 Aufbau diagram | 5d 4f 6s block | d group | 8 period | 6 atomic mass | 190.23 u (unified atomic mass units)
Thermodynamic properties
phase at STP | solid melting point | 3033 °C (rank: 4th) boiling point | 5012 °C (rank: 4th) molar heat of fusion | 31 kJ/mol (rank: 9th) molar heat of vaporization | 630 kJ/mol (rank: 6th) specific heat at STP | 130 J/(kg K) (rank: 77th) (properties at standard conditions)
Material properties
density | 22.59 g/cm^3 (rank: 1st) liquid density | 20 g/cm^3 molar volume | 8.421 cm^3/mol Mohs hardness | 7 (≈ quartz) Vickers hardness | 4140 MPa (rank: 4th) Brinell hardness | 3920 MPa (rank: 2nd) shear modulus | 222 GPa Poisson ratio | 0.25 (rank: 41st) sound speed | 4940 m/s (rank: 13th) thermal expansion | 5.1×10^-6 K^(-1) (rank: 60th) thermal conductivity | 88 W/(m K) (rank: 22nd) (properties at standard conditions)
Electromagnetic properties
electrical type | conductor resistivity | 8.1×10^-8 Ω m (ohm meters) electrical conductivity | 1.2×10^7 S/m (siemens per meter) magnetic type | paramagnetic volume magnetic susceptibility | 1.4×10^-5 mass magnetic susceptibility | 6×10^-10 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.1×10^-10 m^3/mol (cubic meters per mole) work function | 5.93 eV (Polycrystalline) threshold frequency | 1.434×10^15 Hz (hertz) superconducting point | 0.66 K (kelvins) color | (slate gray)
Reactivity
valence | 6 electronegativity | 2.2 electron affinity | 106.1 kJ/mol (kilojoules per mole) first ionization energy | 840 kJ/mol (kilojoules per mole) ionization energies | 840 kJ/mol | 1600 kJ/mol
Reactivity
Atomic properties
term symbol | ^5D_4 atomic radius | 130 pm covalent radius | 144 pm (electronic ground state properties)
(neutral osmium atomic spectrum)
Abundances
universe abundance | 3×10^-7 mass% (rank: 50th) solar abundance | 2×10^-7 mass% (rank: 50th) meteorite abundance | 6.6×10^-5 mass% (rank: 45th) crust abundance | 1.8×10^-7 mass% (rank: 77th) universe molar abundance | 2×10^-9 mol% (rank: 52nd) solar molar abundance | 2×10^-9 mol% (rank: 50th) meteorite molar abundance | 7×10^-6 mol% (rank: 45th) crust molar abundance | 2×10^-8 mol% (rank: 78th)
Nuclear properties
half-life | (stable) stable isotopes | Os-192 (40.93%) | Os-190 (26.36%) | Os-189 (16.21%) | Os-188 (13.29%) | Os-187 (1.6%) | Os-184 (2×10^-4) nuclear spin | Os-162: 0^+ | Os-163: 7/2^- | Os-164: 0^+ | Os-165: 7/2^- | Os-166: 0^+ | Os-167: 3/2^- | Os-168: 0^+ | Os-169: 5/2^- | Os-170: 0^+ | Os-171: 5/2^- | Os-172: 0^+ | Os-173: 5/2^- | Os-174: 0^+ | Os-175: 5/2^- | Os-176: 0^+ | Os-177: 1/2^- | Os-178: 0^+ | Os-179: 1/2^- | Os-180: 0^+ | Os-181: 1/2^- | Os-182: 0^+ | Os-183: 9/2^+ | Os-184: 0^+ | Os-185: 1/2^- | Os-186: 0^+ | Os-187: 1/2^- | Os-188: 0^+ | Os-189: 3/2^- | Os-190: 0^+ | Os-191: 9/2^- | Os-192: 0^+ | Os-193: 3/2^- | Os-194: 0^+ | Os-195: 3/2^- | Os-196: 0^+ unstable isotopes | Os-186 (2 quadrillion yr) | Os-194 (6 yr) | Os-185 (93.6 days) | Os-191 (15.4 days) | Os-193 (30.11 h) | Os-182 (22.1 h) | Os-183 (13 h) | Os-181 (110 min) | Os-196 (34.83 min) | Os-180 (21.5 min) | Os-195 (9 min) | Os-179 (6.5 min) | Os-178 (5 min) | Os-176 (220 s) | Os-177 (180 s) | Os-175 (84 s) | Os-174 (44 s) | Os-173 (22.4 s) | Os-172 (19.2 s) | Os-171 (8.3 s) | Os-170 (7.37 s) | Os-169 (3.43 s) | Os-168 (2.1 s) | Os-167 (810 ms) | Os-166 (199 ms) | Os-165 (71 ms) | Os-164 (21 ms) | Os-163 (5.5 ms) | Os-162 (2.1 ms) neutron cross-section | 15 b neutron mass absorption | 0.0023 m^2/kg
Identifiers
CAS number | 7440-04-2 PubChem CID number | 23937
Elements ranked by density
1 | osmium | 22.59 g/cm^3 | 2 | iridium | 22.56 g/cm^3 | 3 | platinum | 21.45 g/cm^3 | 4 | rhenium | 21.02 g/cm^3 | 5 | neptunium | 20.45 g/cm^3 | 6 | plutonium | 19.816 g/cm^3 | 7 | gold | 19.3 g/cm^3 | 8 | tungsten | 19.25 g/cm^3 | 9 | uranium | 19.05 g/cm^3 | 10 | tantalum | 16.65 g/cm^3 | ⋮