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A radioactive element X emits 3alpha , o...

A radioactive element X emits `3alpha` , one beta and one gamma-particles and forms `""_(76)Y^(225)` Element X is

A

`""_(81)^(238)X`

B

`""_(80)^(2237)X`

C

`""_(80)^(237)X`

D

`""_(80)^(236)X`

Text Solution

Verified by Experts

The correct Answer is:
A
`""_(Z)^(A)X to ""_(76)^(225)Y+3""_(2)He^(4)+""_(-1)e^(0) + ""_(0)^(0)y`
`A=225+4 xx3`
A=237
`Z=73 + 3 xx2 -1`
Z=78
`therefore ""_(Z)^(A)X=""_(78)^(237)X`
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