Samarium
Latin name | Samarium |
English name | Samarium |
chemical symbol | Sm |
atomic number | 62 |
relative atomic mass | 150,36 |
period | 6 |
group | III.B |
classification | lanthanides |
discovery year | 1879 |
discoverer | Lecoq de Boisbaudran |
melting point [°C] | 1074 |
boiling point [°C] | 1794 |
density [g cm-3] | 7,536 |
density at melting point [g cm-3] | 7,16 |
electronegativity [Pauling] | 1,17 |
oxidation states | II, III |
electron configuration | [Xe]4f6 6s2 |
atomic radius [pm] | 238 |
covalent radius [pm] | 162 |
specific heat [J g-1K-1] | 0,2 |
heat of fusion [kJ mol-1] | 8,63 |
thermal conductivity [W m-1 K-1] | 13 |
el. conductivity [S m-1] | 1,1.106 |
1. ionizing potential [eV] | 5,6437 |
2. ionizing potential [eV] | 11,069 |
3. ionizing potential [eV] | 23,423 |
Mohs hardness | ≈ 3 |
Vickers hardness [MPa] | 412 |
Brinell hardness [MPa] | 441 |
shear modulus [GPa] | 20 |
Young's modulus [GPa] | 50 |
state at normal conditions | solid |
Resources
promethium ← samarium → europium