1.

Which of the following does not occur?

Answer»

`_(20)^(40)Ca+_(0)^(1)n rarr _(19)^(40)K+_(1)^(1)H`
`_(12)^(24)MG+_(2)^(4)He rarr _(14)^(27)Si +_(0)^(1)n`
`_(48)^(113)CD+_(0)^(1)n rarr_(48)^(112)Cd+_(-1)^(0)e`
`_(20)^(43)Ca+_(2)^(4)He rarr_(21)^(46)Sc+_(1)^(1)H`

Answer :C


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