The Half-life Of against . Calculate The Activity Of 1 G Sample of . Avogadro’s Number is .

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Question

The half-life of against . Calculate the activity of 1 g sample of . Avogadro’s number is .

None of these

easy

Solution

Correct option is

1 gram-atom of has a mass of 238 g and contains atoms. Therefore, the number of atoms in 1g of

The half-life T of

Therefore, the decay constant of

The activity or rate disintegration at any instant, when the number of atoms is N, is

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