Assuming that only particles emitted from atoms during natural radioactive decay are alpha and beta particles, which of the following atoms could not
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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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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