The answer is Cl-
The symbol for beryllium is Be, and the symbol for chloride is Cl. Therefore, the symbol for beryllium chloride would be BeCl2.
The chemical formula (not symbol) for hydrogen chloride is HCl.
The answer is Cl-
The symbol of the chloride anion is Cl-.
Chloride is an ion and would be Cl-
The symbol for the chloride ion is Cl-.
The symbol for Barium chloride is BaCl2.
The symbol for calcium chloride is CaCl2.
The symbol for iron chloride is FeCl3.
The chemical symbol for magnesium chloride is MgCl2.
The chemical symbol for aluminum chloride is AlCl3.
The formula unit (not symbol) of sodium chloride is NaCl.