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The amount of radioactive ""(52)I^(123) ...

The amount of radioactive `""_(52)I^(123) (t_(1//2)=25` minutes) left after 50 minutes will be :

A

`1//4`

B

`1//2`

C

`1//3`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
All radioactive decay follows first order kinetics.
`t_(1//2)=25` min. so `(N_(t))/(N_(0))=((1)/(2))^((50)/(25))=(1)/(4)`
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