Chapter 4, Problem 17E

Determine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or superoxides.

(a) ${\text{H}}_{\text{3}}{\text{PO}}_{\text{4}}$

(b) $\text{Al}{(\text{OH)}}_3$

(c) ${\text{SeO}}_{\text{2}}$

(d) ${\text{KNO}}_{\text{2}}$

(e) ${\text{ln}}_{\text{2}}{\text{S}}_{\text{3}}$

(f) ${\text{P}}_{\text{4}}{\text{O}}_{\text{6}}$