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Which emits beta-particles ?...

Which emits `beta`-particles ?

A

`""_(1)H^(3)`

B

`""_(6)C^(14)`

C

`""_(19)K^(40)`

D

All

Text Solution

Verified by Experts

The correct Answer is:
B
The nuclei which have higher n/p ratio than required for stability have a tendency ot emit `beta` rays, thereby decreasing the n/p ratio and bringing it in the stability belt. For example, if `""_(6)^(14)C` changes to `""_(7)^(14)N` , the n/p ratio decreases from 1.33 to 1
`""_(6)^(14)C to ""_(7)^(14)N + ""_(-1)e^(0)`
n/p =1.33 `" "` n/p =1
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