nucleus, after absorbing energy, decays into two 
-particles and an unknown nucleus. The unknown nucleus is :
Text Solution
Verified by ExpertsThe correct answer is:
B
Atomic number of neon is 10
By the emission of two 
-particles, atomic number will be reduced by 4 . Therefore, atomic number of the unknown element will be 
Similarly mass number of the unknown element will be 
∴ Unknown nucleus is carbon 
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