The 238 U92disintegrates to give 4a and 6b particles. The group number of the daughter element is

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answer is 3.

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Detailed Solution

No. of a=4 i.e. 4 x 4 = 16 A = 238-16 = 222No. of b = 6 i.e. (4x2)= 8-6=2 Z = 92 – 2 = 90.i.e. 90Th 222 III or 3rd group

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