Q 12-13-061JEE MainJEE Main 2023 (29 Jan, Shift 1)Easy
A radioactive element $^{242}_{92}\text{X}$ emits two $\alpha$-particles, one electron and two positrons. The product nucleus is represented by $^{234}_{P}\text{Y}$. The value of $P$ is ______.
Numerical value type. Enter your answer.
Answer: 87
- Two $\alpha$: $Z$ falls by $4$ → $88$, $A$ falls by $8$ → $234$.
- One $\beta^-$: $Z$ rises by $1$ → $89$.
- Two $\beta^+$: $Z$ falls by $2$ → $87$.
So $P=87$.
Solution by Sreeraj P, M.Sc Physics