Input interpretation
period 7 elements
Members
francium | radium | actinium | protactinium | thorium | neptunium | uranium | americium | plutonium | berkelium | curium | californium | einsteinium | fermium | mendelevium | nobelium | rutherfordium | dubnium | lawrencium | bohrium | seaborgium | meitnerium | roentgenium | hassium | darmstadtium | nihonium | copernicium | moscovium | flerovium | livermorium | tennessine | oganesson (total: 32)
Periodic table location
Periodic table location
Images
Images
Basic elemental properties
atomic symbol | all | Ac | Am | Bh | Bk | Cf | Cm | Cn | Db | Ds | Es | Fl | Fm | Fr | Hs | Lr | Lv | Mc | Md | Mt | Nh | No | Np | Og | Pa | Pu | Ra | Rf | Rg | Sg | Th | Ts | U atomic number | median | 102.5 | highest | 118 (oganesson) | lowest | 87 (francium) | distribution | block | all | d | f | p | s group | all | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 period | all | 7 atomic mass | median | 261 u | highest | 294 u (oganesson) | lowest | 223 u (francium) | distribution | half-life | median | 7.8 h | highest | 14.06 Gyr (thorium) | lowest | 5 ms (oganesson) | distribution |
Thermodynamic properties
phase at STP | all | solid melting point | median | 1050 °C | highest | 1750 °C (thorium) | lowest | 640 °C (plutonium) | distribution | boiling point | median | 3230 °C | highest | 4820 °C (thorium) | lowest | 1737 °C (radium) | distribution | molar heat of fusion | median | 14 kJ/mol | highest | 16 kJ/mol (thorium) | lowest | 2 kJ/mol (francium) | distribution | molar heat of vaporization | median | 370 kJ/mol | highest | 530 kJ/mol (thorium) | lowest | 65 kJ/mol (francium) | distribution | specific heat at STP | median | 116 J/(kg K) | highest | 120 J/(kg K) (actinium) | lowest | 92 J/(kg K) (radium) | distribution | (properties at standard conditions)
Material properties
density | median | 14.78 g/cm^3 | highest | 20.45 g/cm^3 (neptunium) | lowest | 5 g/cm^3 (radium) | distribution | molar volume | median | 16.7 cm^3/mol | highest | 45 cm^3/mol (radium) | lowest | 11.6 cm^3/mol (neptunium) | distribution | Vickers hardness | all | 350 MPa | 1960 MPa Brinell hardness | all | 400 MPa | 2400 MPa shear modulus | median | 43 GPa | highest | 111 GPa (uranium) | lowest | 31 GPa (thorium) Young's modulus | median | 96 GPa | highest | 208 GPa (uranium) | lowest | 79 GPa (thorium) Poisson ratio | all | 0.21 | 0.23 | 0.27 ultimate tensile strength | all | 219 MPa | 400 MPa sound speed | median | 2490 m/s | highest | 3155 m/s (uranium) | lowest | 2260 m/s (plutonium) thermal conductivity | median | 12 W/(m K) | highest | 54 W/(m K) (thorium) | lowest | 6 W/(m K) (neptunium and plutonium) | distribution | (properties at standard conditions)
Electromagnetic properties
resistivity | median | 6.4×10^-7 Ω m (ohm meters) | highest | 1.5×10^-6 Ω m (ohm meters) (plutonium) | lowest | 1.5×10^-7 Ω m (ohm meters) (thorium) | distribution | electrical conductivity | median | 2.3×10^6 S/m (siemens per meter) | highest | 6.7×10^6 S/m (siemens per meter) (thorium) | lowest | 670000 S/m (siemens per meter) (plutonium) | distribution | volume magnetic susceptibility | median | 4.995×10^-4 | highest | 7.04×10^-4 (americium) | lowest | 8.4×10^-5 (thorium) | distribution | mass magnetic susceptibility | median | 3.17×10^-8 m^3/kg (cubic meters per kilogram) | highest | 5.15×10^-8 m^3/kg (cubic meters per kilogram) (americium) | lowest | 7.2×10^-9 m^3/kg (cubic meters per kilogram) (thorium) | distribution | molar magnetic susceptibility | median | 7.509×10^-9 m^3/mol (cubic meters per mole) | highest | 1.251×10^-8 m^3/mol (cubic meters per mole) (americium) | lowest | 1.7×10^-9 m^3/mol (cubic meters per mole) (thorium) | distribution | work function | all | 3.4 eV | (3.63 to 3.9) eV superconducting point | median | 1 K (kelvin) | highest | 1.4 K (kelvins) (protactinium) | lowest | 0.6 K (kelvins) (americium)
Reactivity
valence | median | 4 | highest | 7 (bohrium) | lowest | 1 (francium) | distribution | electronegativity | median | 1.3 | highest | 1.5 (protactinium) | lowest | 0.7 (francium and radium) | distribution | first ionization energy | median | 592 kJ/mol (kilojoules per mole) | highest | 642 kJ/mol (kilojoules per mole) (nobelium) | lowest | 380 kJ/mol (kilojoules per mole) (francium) | distribution |
Atomic properties
term symbol | all | ^1S_0 | ^2D_(3/2) | ^2F_(7/2) | ^2P_(1/2) | ^2P_(3/2) | ^2S_(1/2) | ^3D_3 | ^3F_2 | ^3H_6 | ^3P_0 | ^3P_2 | ^4F_(3/2) | ^4F_(9/2) | ^4K_(11/2) | ^4S_(3/2) | ^5D_0 | ^5D_4 | ^5I_(15/2) | ^5I_8 | ^5L_6 | ^6H_(15/2) | ^6L_(11/2) | ^6S_(5/2) | ^7F_0 | ^8S_(7/2) | ^9D_2 atomic radius | median | 178 pm | highest | 215 pm (radium) | lowest | 175 pm (4 elements) | distribution | covalent radius | median | 198 pm | highest | 260 pm (francium) | lowest | 169 pm (curium) | distribution | (electronic ground state properties)