Question

Number of $\alpha$- and $\beta$- particles emitted in 4n disintegration series is

• A. $4\alpha ,4\beta$
• B. $7\alpha ,4\beta$
• C. $7\alpha ,7\beta$
• D. $7\alpha ,5\beta$

Answer 1

The correct option is B $7\alpha ,4\beta$

${}_{92}^{236}U{\to }_{82}^{208}Pb$

No.of alpha particles =(236-208)/4
=7

No.of beta particles = 2 (7)-10
= 4.