Chapter 2, Problem 2.66QP

In which one of the following pairs do the two species resemble each other most closely in chemical properties? Explain. (a) ${}_1^1\text{H}$ and ${}_1^1{\text{H}}^{+}$, (b) ${}_7^{14}\text{N}$ and ${}_7^{14}{\text{N}}^{3-}$, (c) ${}_6^{12}\text{C}$ and ${}_6^{13}\text{C}$.