1.

The half life of `I""^(131)` is 8 day. Given a sample of `I""^(131)` at t=0, we can assert thatA. No nucleus will decay at t=4dayB. No nucleus will decay before t=8dayC. All nucleus will decay before t=16dayD. A given nucleus may decay before

Answer» Correct Answer - d
`""_(4)""^(9)Be+gammato""_(4)""^(8)Be+""_(0)""^(1)n`
`""_(4)""^(9)Be+""_(1)""^(1)H`


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