Nuclear Physics And Radioactivity Question 343

Question: A nucleus $ _{Z}^{A}X $ emits an a-particle. The resultant nucleus emits a $ {{\beta }^{+}} $ particle. The respective atomic and mass no. of the final nucleus will be [MP PET 2000]

Options:

A) Z ? 3, A ? 4

B) Z ? 1, A ? 4

C) Z ? 2, A ? 4

D) Z, A ? 2

Show Answer

Answer:

Correct Answer: A

Solution:

$ _{Z}^{A}X\to _{Z-2}^{A-4}Y+ _{2}^{4}He\to _{Z-3}^{A-4}Z+ _{1}^{0}B $