MCQ
$^{22}$Ne nucleus, after absorbing energy, decays into two $\alpha-$particles and an unknown nucleus. The unknown nucleus is:
- ANitrogen
- ✓Carbon
- CBoron
- DOxygen
✓
Answer
Correct option: B.
Carbon
$^{22}$Ne decays
$\alpha$ particle $= He^{2+}$
Mass No $= 4$
$p = 2, n = 2$
So, New mass no. $= 22 − 8 = 14$
Atomic No. $= 10 − 4 = 6$
So, the new element is ${6^C}^{14}$
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