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Let N(beta) be the number of beta partic...

Let `N_(beta)` be the number of `beta` particles emitted by `1` gram of `Na^(24)` radioactive nuclei (half life `= 15` hrs) in `7.5` hours, `N_(beta)` is close to (Avogadro number `= 6.023 xx 10^(23) // "g. mole"`) :-

A

`1.75 xx 10^(22)`

B

`6.2 xx 10^(21)`

C

`7.5 xx 10^(21)`

D

`1.25 xx 10^(22)`

Text Solution

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The correct Answer is:
C
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