Answer
Mercurous Chloride: $Hg_2Cl_2$
Mercuric Chloride: $HgCl_2$
Work Step by Step
The mercurous ion is composed of two mercury atoms with a +2 charge (Hg₂²⁺). Chloride has a -1 charge. To balance the two, the mercurous needs two Chlorides. Thus, the chemical formula is Hg₂Cl₂.
The mercuric ion has a charge of +2 (Hg²⁺). The chloride ion has a charge of -1 (Cl⁻). To balance, two Chlorides are needed. Thus, the chemical formula is HgCl₂.
