Which emits beta-particles ?

1.	Which emits beta-particles ?
Answer» `""_(1)H^(3)` `""_(6)C^(14)` `""_(19)K^(40)` All SOLUTION :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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