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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

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