Question

A radioactive nucleus $92X^{235}$decays to $91Y^{231}$. Which of the following particles are emitted.

• A. One alpha and one electron
• B. Two deuterons and one positron
• C. One alpha and one proton
• D. One proton and four neutrons

Answer 1

Answer: (A)

One alpha and one electron

Answer 2

$92X^{235}{\overset{\quad\alpha\quad}{\rightarrow}}_{90}X^{231}{\overset{\quad - 1e^{0}\quad}{\rightarrow}}_{91}Y^{231}$