35Br
Bromine
Reactive NonmetalBromine (Br) is element 35, a reactive nonmetal, in period 4 and group 17 of the periodic table. Its standard atomic weight is 79.904, it melts at -7.2 °C and boils at 58.8 °C. Discovered by Antoine Jerome Balard, 1826.
Atomic Number35
SymbolBr
NameBromine
Atomic Weight79.904 u
CategoryReactive Nonmetal
Period4
Group17
Melting Point-7.2 °C
Boiling Point58.8 °C
Density3.1028 g/cm³
Electron Config[Ar] 3d10 4s2 4p5
Discovered ByAntoine Jerome Balard, 1826