TG EAMCET 3 May 2025 Shift 2 Paper

Let X and Y be the mass number and atomic number of nucleus P.
∴‌YXP→Q+α+2β−
∴ Mass number of Q=X−4
Atomic number of Q=Y−2+2=Y
Thus, we see that nuclei P and Q have same atomic number but different mass number. Thus, P and Q are isotopes.