Which of the following nuclides is most likely to undergo beta decay?

Question

Quizplus · Accepted Answer

The mass number of the nuclide increases across the answer choices, indicating that the number of neutrons increases as we move from A to D. Since beta decay involves the conversion of a neutron into a proton and an electron (beta particle), a larger number of neutrons increases the likelihood of beta decay occurring. Therefore, option D ($\begin{array} { c } 
200 \
78
\end{array}$ Pt) is the most likely to undergo beta decay.

Which of the Following Nuclides Is Most Likely to Undergo 18878\begin{array} { c } 188 \\78\end{array}18878​

Which of the Following Nuclides Is Most Likely to Undergo $\begin{array} { c } 188 \\78\end{array}$