Q. Which of the following statements is true
A) $\ _{78}Pt^{192}$ has 78 neutrons
B) $\ _{84}Po^{214} \rightarrow \ _{82}Pb^{210} + \beta^{-}$
C) $\ _{92}U^{238} \rightarrow \ _{90}{Th}^{234} + \ _{2}He^{4}$
D) $\ _{90}{Th}^{234} \rightarrow \ _{91}{Pa}^{234} + \ _{2}He^{4}$
Explanation
The correct answer is Option C: $\ _{92}U^{238} \rightarrow \ _{90}{Th}^{234} + \ _{2}He^{4}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.