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A nuclear transformation is denoted by X...

A nuclear transformation is denoted by `X(n,alpha) rarr. _(3)^(7)Li`. Which of the following is the nucleus of element `X`

A

`""_(5)^(10) B`

B

`""^(12) C_(6)`

C

`""_(4)^(11) Be`

D

`""_(5)^(9) B`

Text Solution

Verified by Experts

The correct Answer is:
A
`""_(Z) X^(A) + ""_(0) n^(1) to ""_(3)Li^(7) + "._(2) He^(4)`
On comparison ,
`A = 7 + 4 - 1 = 10 , z = 3 + 2 - 0 = 5`
It is boron `""_(5) B^(10)`
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