Element Bromine (Br)

Atomic number 35 · halogen · Atomic mass 79.904 u

Atomic Mass
79.9040 u
Element Properties
Atomic Number 35
Atomic Mass 79.9040 u
Category halogen / 卤素
Group 17
Period 4
Block P
Electron Configuration [Ar] 3d¹⁰ 4s² 4p⁵
Electronegativity (Pauling) 2.96
Phase at STP Liquid
Density 3.1028 g/cm³
Year Discovered 1826

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