Question

A radioactive nucleus decays from ${}_{92}{X}^{235}$ to ${}_{91}{Y}^{231}$. 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

The correct option is A One alpha and one electron

${}_{92}{X}^{235}\stackrel{\alpha }{⟶}{}_{90}{X}^{231}\stackrel{-1^{e^0}}{⟶}{}_{91}{Y}^{231}$