Atomic Number 35     Atomic Mass 79.904      State liquid

Color brown     Electronegativity 2.96     Melting Point -7.2°C

Boiling Point 58.78°C     Natural Isotopes Br-79 50.69%   Br-81 49.31%

Abbreviated Electron Configuration [Ar] 3d¹⁰ 4s² 4p⁵

Discovered by Antoine J. Balard in 1826.