Textbook Problem

Write an equation for the probable mode of decay for each of the following unstable isotopes, and write an equation for that nuclear reaction.

1. (a) ${\text{silicon-32,}}_{\text{14}}^{\text{32}}\text{Si}$
2. (b) ${\text{titanium-45,}}_{\text{22}}^{\text{45}}\text{Ti}$
3. (c) ${\text{plutonium-239,}}_{\text{94}}^{\text{239}}\text{Pu}$
4. (d) $\text{potassium-42,}{}_{\text{19}}^{\text{42}}\text{K}$