Gallium |
Symbol | Ga |
---|---|
Latin name | Gallium |
Atomic number | 31 |
Period | 4 |
Element category | Metals |
Relative atomic mass | 69.723 |
Group | III.A |
Electronegativity | 1.6 |
Oxidation numbers | 3 |
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1 |
Density [g/cm3] | 5.93 |
State | Solid |
Melting point [°C] | 29.78 |
Boiling point [°C] | 2403 |
Atomic radius [pm] | 135 |
Covalent radius [pm] | 122 |
Thermal conductivity [W m-1K-1] | 40.6 |
Heat capacity [J K-1g-1] | 0.371 |
Discovery | 1875 |
Hardness [Mohs scale] | 1.5 |
Brinell hardness [MPa] | 60 |
Electrical conductivity [S m-1] | 7.1 · 106 |
1.st ionization energy [eV] | 5.9993 |
2.nd ionization energy [eV] | 20.51 |
3.rd ionization energy [eV] | 30.71 |
Stable isotopes | 2 |
Unstable isotopes | 11 |