Chapter 2, Problem 2.43P

Predict the largest and smallest radius in each series, and account for your choices:
a. ${\text{Se}}^{\text{2}-}{\text{Br}}^{-}{\text{Rb}}^{+}{\text{Sr}}^{\text{2}+}$
b. ${\text{Y}}^{\text{3}+}{\text{Zr}}^{\text{4}+}{\text{Nb}}^{\text{5}+}$
c. ${\text{Co}}^{\text{4}+}{\text{Co}}^{\text{3}+}{\text{Co}}^{\text{2}+}\text{Co}$