1.

If X^(a) species emit firstly a positron then two alpha andbeta last one alpha is also emitted and finally convert in Y^(c ) species so correct the relation is

Answer»

a=c+12,d=b-5
a=c-8,d=b-1
a=c-6,d=b-0
a=c-4,d=b-2

Solution :`_(92)U^(235)` NUCLEUS ABSORBS a neutron and then DISINTEGRATE in `_(54)XE^(139),38Sr^(94) and X.`
Thus
`_(92)U^(235)+_(0)n^(1)rarr_(54)Xe^(139)+_(38)Sr^(94)+3_(0)n^(1)`


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