what is bromine ???????
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The chemical element of atomic number 35, a dark red fuming toxic liquid with a choking, irritating smell. It is a member of the halogen group and occurs chiefly in the form of salts in seawater and brines.
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Symbol: Br
Atomic mass: 79.904 u
Atomic number: 35
Electron configuration: [Ar] 3d¹⁰4s²4p⁵
Electronegativity: 2.96
Van der Waals radius: 185 pm
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