Q. An atom of mass number 15 and atomic number 7 captures an $\alpha -$particle and then emits a proton. The mass number and atomic number of the resulting product will respectively be
A) 14 and 2
B) 15 and 3
C) 16 and 4
D) 18 and 8
Explanation
(d) $\ _{7}X^{15} +_{2}He^{4} \rightarrow_{1}p^{1} +_{8}Y^{18}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.