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Two radio isotopes A and B of atomic mas...

Two radio isotopes A and B of atomic mass X and Y are mixed in equal amount by mass. After 20 days , their mass ratio is found to be `1:4`. Isotope A has a half-life of 1 day. The half-life of isotope B is :

A

`1.11 (Y)/(X)` days

B

`0.11 (X)/(Y)` day

C

0.6237 day

D

1.10 day

Text Solution

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The correct Answer is:
D
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