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If ""(92)U^(235) assumed to decay only b...

If `""_(92)U^(235)` assumed to decay only by emitting two `alpha`- and one `beta`-particles, the possible product of decay is

A

`""_(89)Ac^(231)`

B

`""_(89)Ac^(235)`

C

`""_(89)Ac^(236)`

D

`""_(89)Ac^(227)`

Text Solution

Verified by Experts

The correct Answer is:
D
`""_(92)U^(235)to""_(Z)X^(A)+2""_(2)He^(4)+""_(-1)e^(0)`
Equating mass number of both sides
`235=A+2xx4+0`
`therefore" "A=235-8=227`
Similarly, equating atomic number of both sides
`92=Z+2xx2-1`
`therefore" "Z=92-3=89`
`therefore" """_(Z)X^(A)=""_(89)Ac^(227)`
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