21.2 Exercise 3

Complete each of the following equations by adding the missing species:

(a) $_{13}^{27} \text{Al} + _{2}^{4} \text{He} \rightarrow ? + _{0}^{1} \text{n}$

(b) $_{ 94}^{239} \text{Pu} + ? \rightarrow _{ 96}^{242} \text{Cm} + _{0}^{1} \text{n}$

(c) $_{ 7}^{14} \text{N} + _{2}^{4} \text{He} \rightarrow ? + _{1}^{1} \text{H}$

(d) $_{ 92}^{235} \text{U} \rightarrow ? + _{ 55}^{135} \text{Cs} + 4 _{0}^{1} \text{n}$