Textbook Problem

hat is the total number of valence electrons in each of the following molecules?

msp;  $\begin{array}{l}\text{a}.{\text{ HNO}}_{\text{3}} \text{C}.{\text{ H}}_{\text{3}}{\text{PO}}_{\text{4}}\\ \text{b}.{\text{ H}}_{\text{2}}{\text{SO}}_{\text{4}} \text{d}.{\text{ HClO}}_{\text{4}}\end{array}$