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.(92)U^(238) is a neutral alpha- emitter...

`._(92)U^(238)` is a neutral `alpha-` emitter. After `alpha-` emission, the residual nucleus callled `UX_(1)` in turns emits `a beta^(-1)` particle to produce another nucleuis `UX_(2)` Find out the atomic and mass numbers of `UX_(1)` and `UX_(2)`. Also if uranium belongs to `III gp` to which group `UX_(1)` and `UX_(2)` belong.

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The correct Answer is:
`90,234,91,234,III gp`
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P BAHADUR-RADIO ACTIVITY-Exercies 9
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  15. The decay constant for an alpha- decay of Th^(232) is 1.58xx10^(-10) s...

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  16. Two reacants A and B are present such that [A(0)] = 4[B(0)] and t(1//2...

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  18. The rate of decay of a radioactive sample is R(1) at time t(1) and R(2...

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