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The activity of a radionuclide (X^(100))...

The activity of a radionuclide `(X^(100))` is 6.023 curie . If the disintegration constant is `3.7 xx 10^(4) sec^(-1)` , the mass of the radionuclide is :

A

`10^(-14) `g

B

`10^(-6)` g

C

`10^(-15)` g

D

`10^(-3)` g

Text Solution

Verified by Experts

The correct Answer is:
C
`A = lambda . N , 6.023 xx 3.7 xx 10^(10) = 3.7 xx 10^(4) xx N_(t)`
`N_(t)= 6.023 xx 10^(6) ` atom = `("wt")/(GAW) = (N_(t))/(6.023 xx 10^(23)) = 10^(-15)` gms
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