A) 92, 236
B) 88, 230
C) 90, 130
D) 88, 234
Correct Answer: B
Solution :
After emission of a-particle, the atomic number of new element is reduced by 2 unit and the atomic mass is reduced by 4 unit. Therefore, the new element after emission of \[\alpha -\]particle is\[_{90}{{X}^{234}}\]. Again by emission of one more \[\alpha -\]particle from\[_{90}{{X}^{234}}\]nucleus, new element is\[_{88}{{Y}^{230}}\].You need to login to perform this action.
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