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

The number of `alpha`-and `beta`-particles emitted in the nuclear reaction, `._(90)Th^(228) to ._(83)Bi^(212)`, respectively are

A

4 , 1

B

3 , 7

C

8, 1

D

4, 7

Text Solution

Verified by Experts

The correct Answer is:
A
`._(90)Th^(228)rarr ._(83)Bi^(212)`
No. of `alpha-"particle" = (228 - 212)/(4) = (16)//(4) = 4`
No. of `beta-"particle" = 2xx 4 - 90 + 83`
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