1.

Which of the following transformations is not correct ?

Answer»

`_33^75 As +_2^4 He to _35^78 BR +_0^1 N`
`_3^7 LI + _1^1 H to _4^7 Be+_0^1 n`
`_21^45 Sc+_0^1n to _20^45 Ca+_0^1 n`
`_83^209 Bi+_1^2 H to _84^210 Po+_0^1 n`

ANSWER :C


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