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The half life period of an radioactive e...

The half life period of an radioactive element is `1.4 xx 10 ^(10)` years. The time in which the activity of the element is raduced to `90%` of its original value is :

A

`2.202 xx 10 ^(11)` years

B

`2.303 xx 10 ^(9)` years

C

`2.303 xx 10 ^(16)`years

D

`2.303 xx 10 ^(7)` years

Text Solution

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The correct Answer is:
B
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