Chapter 5, Problem 34P

For each of the following pairs of atoms or ions, state which you expect to have the larger radius.

(a) Sm or ${\text{Sm}}^{\text{3}+}$

(b) Mg or Ca

(c) ${\text{I}}^{-}$ orXe

(d) Ge or As

(e) ${\text{Sr}}^{+}$ or Rb