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1 mg radium has 2.68 xx 10^(18) atoms. I...

1 mg radium has `2.68 xx 10^(18)` atoms. Its half-life is 1620 years. How many radium atoms will disintegrate from 1 mg of pure radium in 3240 years ?

A

`2.01xx10^(9)`

B

`2.01xx10^(8)`

C

`1.01xx10^(9)`

D

`1.01xx10^(8)`

Text Solution

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The correct Answer is:
B
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