Assuming that only particles emitted from atoms during natural radioactive decay are alpha and beta particles, which of the following atoms could not possibly result from the natural decay of `._(92)U^(235)` atoms ?
A. `._(90)Th^(231)`
B. `_(89)Ac^(227)`
C. `._(89)Ac^(231)`
D. `._(87)Fr^(227)`

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1 Answers

Correct Answer - C
`._(92)U^(235) overset (-alpha)rarr _(90)U^(231) overset(-alpha)rarr U_(88)^(227) overset(-beta)rarr _(89)U^(231)`
So C and D are not possible

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