Bromine

Symbol | Br
Latin name | Bromum
Atomic number | 35
Period | 4
Element category | Halogens
Relative atomic mass | 79.904
Group | VII.A
Electronegativity | 2.8
Oxidation numbers | -1, 1, 3, 5, 7
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5
Density [g/cm3] | 3.123
State | Liquid
Melting point [°C] | -7.25
Boiling point [°C] | 58.78
Critical point [°C] | 315
Critical pressure [MPa] | 10.34
Atomic radius [pm] | 94
Covalent radius [pm] | 114
Thermal conductivity [W m-1K-1] | 0.122
Heat capacity [J K-1g-1] | 0.226
Discovery | 1826
Electrical conductivity [S m-1] | 1 · 10-10
1.st ionization energy [eV] | 11.8138
2.nd ionization energy [eV] | 21.8
3.rd ionization energy [eV] | 36.0
Stable isotopes | 2
Unstable isotopes | 16