In magnesium chloride, what balances the 2+ charge of the magnesium ion?

1 Answer
Jan 11, 2017

Two negative charges from the two chloride ions.....


Salts are electrically neutral. In magnesium chloride or calcium chloride or ferrous chloride, the charge on the metal centre is equally balanced by the chlorides. #Cl^-# bears a single negative charge, and thus 2 equiv of chloride are required to give a salt.