Input interpretation
10 densest elements | by density
Result
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 |
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
atomic symbol | all | Au | Ir | Np | Os | Pt | Pu | Re | Ta | U | W atomic number | median | 77.5 | highest | 94 (plutonium) | lowest | 73 (tantalum) | distribution | block | all | d | f group | all | 5 | 6 | 7 | 8 | 9 | 10 | 11 period | all | 6 | 7 atomic mass | median | 193.65 u | highest | 244 u (plutonium) | lowest | 180.94788 u (tantalum) | distribution | half-life | median | 79 Myr | highest | 4.47 Gyr (uranium) | lowest | 2.145 Myr (neptunium)
Thermodynamic properties
phase at STP | all | solid melting point | median | 2117 °C | highest | 3422 °C (tungsten) | lowest | 640 °C (plutonium) | distribution | boiling point | median | 4200 °C | highest | 5596 °C (rhenium) | lowest | 2856 °C (gold) | distribution | molar heat of fusion | median | 26 kJ/mol | highest | 36 kJ/mol (tantalum) | lowest | 10 kJ/mol (neptunium) | distribution | molar heat of vaporization | median | 525 kJ/mol | highest | 800 kJ/mol (tungsten) | lowest | 325 kJ/mol (plutonium) | distribution | specific heat at STP | median | 132 J/(kg K) | highest | 140 J/(kg K) (tantalum) | lowest | 116 J/(kg K) (uranium) | distribution | (properties at standard conditions)
Material properties
density | median | 20.133 g/cm^3 | highest | 22.59 g/cm^3 (osmium) | lowest | 16.65 g/cm^3 (tantalum) | distribution | liquid density | median | 17.6 g/cm^3 | highest | 20 g/cm^3 (osmium) | lowest | 15 g/cm^3 (tantalum) | distribution | molar volume | median | 9.88 cm^3/mol | highest | 12.495 cm^3/mol (uranium) | lowest | 8.421 cm^3/mol (osmium) | distribution | Mohs hardness | median | 6.5 | highest | 7.5 (between quartz and topaz) (tungsten) | lowest | 2.5 (between gypsum and calcite) (gold) | distribution | Vickers hardness | all | 216 MPa | 549 MPa | 873 MPa | 1760 MPa | 1960 MPa | 2450 MPa | 3430 MPa | 4140 MPa Brinell hardness | all | 392 MPa | 800 MPa | 1320 MPa | 1670 MPa | 2400 MPa | 2450 MPa | 2570 MPa | 3920 MPa bulk modulus | median | 230 GPa | highest | 370 GPa (rhenium) | lowest | 100 GPa (uranium) | distribution | shear modulus | median | 111 GPa | highest | 222 GPa (osmium) | lowest | 27 GPa (gold) | distribution | Young's modulus | median | 197 GPa | highest | 528 GPa (iridium) | lowest | 78 GPa (gold) | distribution | Poisson ratio | all | 0.21 | 0.23 | 0.25 | 0.26 | 0.28 | 0.3 | 0.34 | 0.38 | 0.44 ultimate tensile strength | all | 120 MPa | 400 MPa | 0.98 GPa sound speed | median | 3400 m/s | highest | 5174 m/s (tungsten) | lowest | 1740 m/s (gold) | distribution | thermal expansion | median | 6.2×10^-6 K^(-1) | highest | 1.42×10^-5 K^(-1) (gold) | lowest | 4.5×10^-6 K^(-1) (tungsten) | distribution | thermal conductivity | median | 64 W/(m K) | highest | 320 W/(m K) (gold) | lowest | 6 W/(m K) (neptunium and plutonium) | distribution | (properties at standard conditions)
Electromagnetic properties
resistivity | median | 1.2×10^-7 Ω m (ohm meters) | highest | 1.5×10^-6 Ω m (ohm meters) (plutonium) | lowest | 2.2×10^-8 Ω m (ohm meters) (gold) | distribution | electrical conductivity | median | 8.6×10^6 S/m (siemens per meter) | highest | 4.5×10^7 S/m (siemens per meter) (gold) | lowest | 670000 S/m (siemens per meter) (plutonium) | distribution | volume magnetic susceptibility | median | 9.59×10^-5 | highest | 6.282×10^-4 (plutonium) | lowest | -3.44×10^-5 (gold) | distribution | mass magnetic susceptibility | median | 4.59×10^-9 m^3/kg (cubic meters per kilogram) | highest | 3.17×10^-8 m^3/kg (cubic meters per kilogram) (plutonium) | lowest | -1.78×10^-9 m^3/kg (cubic meters per kilogram) (gold) | distribution | molar magnetic susceptibility | median | 8.49×10^-10 m^3/mol (cubic meters per mole) | highest | 7.735×10^-9 m^3/mol (cubic meters per mole) (plutonium) | lowest | -3.51×10^-10 m^3/mol (cubic meters per mole) (gold) | distribution | work function | all | 4.72 eV | 5.93 eV | (3.63 to 3.9) eV | (4 to 4.8) eV | (4.32 to 5.22) eV | (5 to 5.76) eV | (5.12 to 5.93) eV | (5.31 to 5.47) eV superconducting point | median | 0.67 K (kelvins) | highest | 4.47 K (kelvins) (tantalum) | lowest | 0.015 K (kelvins) (tungsten) | distribution |
Reactivity
valence | median | 6 | highest | 7 (rhenium) | lowest | 5 (gold and tantalum) | distribution | electronegativity | median | 2 | highest | 2.54 (gold) | lowest | 1.28 (plutonium) | distribution | electron affinity | median | 106.1 kJ/mol (kilojoules per mole) | highest | 222.8 kJ/mol (kilojoules per mole) (gold) | lowest | 14.5 kJ/mol (kilojoules per mole) (rhenium) | distribution | first ionization energy | median | 765 kJ/mol (kilojoules per mole) | highest | 890.1 kJ/mol (kilojoules per mole) (gold) | lowest | 584.7 kJ/mol (kilojoules per mole) (plutonium) | distribution |
Atomic properties
term symbol | all | ^2S_(1/2) | ^3D_3 | ^4F_(3/2) | ^4F_(9/2) | ^5D_0 | ^5D_4 | ^5L_6 | ^6L_(11/2) | ^6S_(5/2) | ^7F_0 atomic radius | median | 135 pm | highest | 175 pm (3 elements) | lowest | 130 pm (osmium) | distribution | covalent radius | median | 157 pm | highest | 196 pm (uranium) | lowest | 136 pm (platinum and gold) | distribution | van der Waals radius | median | 175 pm | highest | 186 pm (uranium) | lowest | 166 pm (gold) | distribution | (electronic ground state properties)