First slide

Radio activity

Question

The nucleus ${}_{48}^{115}{Cd}$ after two successive $β^{-}$ decays will give

Moderate

A

${}_{46}^{115}{Pa}$
B

${}_{49}^{114}{In}$
C

${}_{50}^{113}{Sn}$
D

${}_{50}^{115}{Sn}$

Solution

${}_{48}{Cd}^{115} \overset{2 ({}_{- 1}β^{0})}{\to} {}_{50}{Sn}^{115}$

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