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The bond formed between barium and bromine atom is formed by the transfer of electrons from barium metal to bromine non-metal, so barium and bromine form ionic bonds. Therefore, barium and bromine form an ionic compound.
The barium bromide compound is a white crystalline powder. BaBr2 compound contains three units that are bonded covalently.
Barium bromide crystallizes from concentrated aqueous solution in its dihydrate , BaBr2·2H2O. Heating this dihydrate to 120 °C gives the anhydrous salt.