Textbook Problem

Some of the reactions explored by Ernest Rutherford (pages 67 and 1166) and others are listed below. Identify the unknown species in each reaction.

(a) $\text{N}\text{ + }\text{H}\text{e}\to \text{O}\text{ + ?}$

(b) $\text{B}\text{e + }\text{H}\text{e}\to \text{ ? + }\text{n}$

(c) $?\text{ + }\text{H}\text{e}\to \text{P}+\text{n}$

(d) $\text{P}\text{u + }\text{H}\text{e}\to ?+\text{n}$