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The number of alpha- and beta- particles...

The number of `alpha-` and `beta`- particles emitted during the transformation of `""_(90)^(232) Th` to `""_(82)^(208) Pb` is respectively

A

2,2

B

4,2

C

6,4

D

8,6

Text Solution

Verified by Experts

The correct Answer is:
C
`""_(90) Th^(232) to ""_(82) Pb^(208) + a (""_(2) He^(4)) + b (""_(-1) beta^(0)) , a = ((232- 208)/(4)) = 6 alpha`
` 8 = (2 xx 6) -b , b = 12 - 8 beta`
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