A) \[9\]
B) \[14\]
C) \[5\]
D) \[7\]
Correct Answer: A
Solution :
Atomic number increases by one after the emission of one P-particle. Hence, the parent nucleus (which on two successive P-emission gave \[_{7}{{N}^{14}}\]) must be \[_{5}{{X}^{14}}\]. Hence, number of neutrons in parent nucleus \[=14-5=9\]You need to login to perform this action.
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