Chapter 9.2, Problem 1CP

Identify the polar molecules in the following group: ${\text{ HBr, CH}}_{\text{4}}{\text{, CS}}_{\text{2}}\text{.}$

$\begin{array}{l}\text{a)}\hfill \\ \text{HBr only}\hfill \\ \text{b)}\hfill \\ {\text{HBr and CS}}_{\text{2}}\hfill \\ \text{c)}\hfill \\ {\text{HBr, CH}}_{\text{4}}{\text{, and CS}}_{\text{2}}\hfill \\ \text{d)}\hfill \\ {\text{CH}}_{\text{4}}{\text{and CS}}_{\text{2}}\hfill \\ \text{e)}\hfill \\ {\text{CH}}_{\text{4}}\text{only}\hfill \\ \hfill \end{array}$