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Reactivity of Actinides

If 8 g of a...

Question

If $8 g$ of a radioactive isotope has a half-life of $10 h$ , then half-life of $2 g$ of the same substance is ___________.

A

2.5 h

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B

5 h

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C

10 h

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D

40 h

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Solution

The correct option is C $10 h$
Half-life period of a radioactive substance remains constant because radioactive reactions are first order reactions.

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