Chapter 4, Problem 4.109SP

Assign oxidation numbers to each element in the following compounds.
(a) ${\text{VOCl}}_{\text{3}}$  (b) ${\text{CuSO}}_{\text{4}}$  (c) ${\text{CH}}_{\text{2}}\text{O}$
(d) ${\text{Mn}}_{\text{2}}{\text{O}}_{\text{7}}$  (e) ${\text{OsO}}_{\text{4}}$  (f) ${\text{H}}_{\text{2}}{\text{PtCl}}_{\text{6}}$