Chapter 5, Problem 35P

Predict the larger ion in each of the following pairs. Give reasons for your answers.

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

(b) ${\text{Co}}^{\text{2}+},{\text{Ti}}^{\text{2}+}$

(c) ${\text{Mn}}^{\text{2}+},{\text{Mn}}^{\text{4}+}$

(d) ${\text{Ca}}^{\text{2}+},{\text{ Sr}}^{\text{2}+}$