bromine

Atomic number: 35
Atomic weight: 79.904
Symbol: Br
Group number: 17
Electronic configuration: [Ar].3d¹⁰.4s².4p⁵

Physical data

Standard state: liquid at 298 K
Colour: red-brown, metallic lustre when solid
Density of solid at ambient temperature/kg m-3: no data
Molar volume/cm3: 19.78

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