Chapter 7, Problem 7.8A

Draw an electron-dot structure for each of the following molecules or ions:
(a) ${\text{CH}}_{\text{2}}{\text{F}}_{\text{2}}$  (b) ${\text{AlCl}}_{\text{3}}$  (c) ${\text{ClO}}_{\text{4}}{}^{-}$
(d) ${\text{PCl}}_{\text{5}}$  (c) ${\text{XeOF}}_{\text{4}}$  (f) ${\text{NH}}_{\text{4}}{}^{+}$