Q. The number of $\alpha$-particles and $\beta - particles\ $respectively emitted in the reaction $\ _{88}A^{196} \rightarrow \ _{78}B^{164}$ are

A) 8 and 8
B) 8 and 6
C) 6 and 8
D) 6 and 6
Explanation

(b) $\ _{88}A^{196} \rightarrow \ _{78}B^{164}$
Number of $\alpha - particles$ $= \ \frac{196 - 164}{4}\ = 8$
$\ \ \ \ \ \ \ \ \ \ \ _{88}A^{196}\overset{- 8\alpha\ \ \ \ \ }{\rightarrow}\ _{72}X^{164} \rightarrow \ _{78}B^{164}$
$\therefore$ Number of $\beta - particles$ =$78 - 72 = 6$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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