Chapter 3, Problem 100E

For each of the following pairs of ions, write the symbol for the formula of the compound they will form.

(a) ${\text{K}}^{+},{\text{O}}^{2-}$

(b) ${\text{NH}}_4{}^{+},{\text{PO}}_4{}^{3-}$

(c) ${\text{Al}}^{3+},{\text{O}}^2{}^{-}$

(d) ${\text{Na}}^{+},{\text{CO}}_{\text{3}}{}^{\text{2}-}$

(e) ${\text{Ba}}^{2+},{\text{PO}}_{\text{4}}{}^{\text{3}-}$