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The half-life of a radioactive element i...

The half-life of a radioactive element is 10 hours. How much will be left after 4 hours in 1g atom sample?

A

`45.6 xx 10^(23)` atoms

B

`4.56 xx 10^(23)` atoms

C

`4.56 xx 10^(21)` atoms

D

`4.56 xx 10^(20)` atoms

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2009-Multiple Choice Questions (Chemistry)
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