Q. A radioactive nucleus $\ _{92}X^{235}$ decays 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
Explanation
(a) $\ _{92}X^{235}\overset{\ \ \alpha\ \ }{\rightarrow}\ _{90}X^{231}\overset{\ _{- 1}e^{0}\ }{\rightarrow}\ _{91}Y^{231}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.