31.4 Exercise 27

In the following four problems, identify the parent nuclide and write the complete decay equation in the $_{Z}^{A} X_{N}$ notation. Refer to the periodic table for values of $Z$.

Confirm that charge, electron family number, and the total number of nucleons are all conserved by the rule for electron capture given in the equation $_{Z}^{A} X_{N} + e^{- } \rightarrow _{Z - 1}^{A} \text{Y}_{N + 1} + \nu_{e}$. To do this, identify the values of each before and after the capture.