Antimony |
Symbol | Sb |
---|---|
Latin name | Stibium |
Atomic number | 51 |
Period | 5 |
Element category | Metalloids |
Relative atomic mass | 121.75 |
Group | V.A |
Electronegativity | 1.9 |
Oxidation numbers | -3, 3, 5 |
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p3 |
Density [g/cm3] | 7.29 |
State | Solid |
Melting point [°C] | 630.74 |
Boiling point [°C] | 1750 |
Atomic radius [pm] | 133 |
Covalent radius [pm] | 138 |
Thermal conductivity [W m-1K-1] | 24.3 |
Heat capacity [J K-1g-1] | 0.207 |
Discovery | 1450 |
Hardness [Mohs scale] | 3-3.5 |
Brinell hardness [MPa] | 294 |
Young's modulus [GPa] | 55 |
Electrical conductivity [S m-1] | 2.5 · 106 |
Shear modulus [GPa] | 20 |
1.st ionization energy [eV] | 8.64 |
2.nd ionization energy [eV] | 16.53 |
3.rd ionization energy [eV] | 25.3 |
Stable isotopes | 2 |
Unstable isotopes | 27 |