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