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75 atoms of radio active species are dec...

75 atoms of radio active species are decayed in 2 half lives (`t""_(1//2)=1hr`) if 100 atoms are taken initially. Number of atoms decayed if 200 atoms are taken in two hours are

A

75

B

150

C

50

D

200

Text Solution

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The correct Answer is:
b
`N//A`
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