Chapter 14, Problem 25QP

Determine the oxidation number of each element in the following compounds.

$\begin{array}{l}\left(\text{a}\right){\text{ ClO}}_{\text{2}}\\ \left(\text{b}\right){\text{ CaF}}_{\text{2}}\\ \left(\text{c}\right){\text{ H}}_{\text{2}}{\text{TeO}}_{\text{3}}\\ \left(\text{d}\right)\text{ NaH}\end{array}$