Question
Question: A nucleus decays by \(\beta^{+}\) emission followed by a gamma emission. If the atomic and mass numb...
A nucleus decays by β+ emission followed by a gamma emission. If the atomic and mass numbers of the parent nucleus are Z and A respectively, the corresponding numbers for the daughter nucleus are respectively.
A
Z−1 and A−1
B
Z+1 and A
C
Z−1 and A
D
Z+1 and A−1
Answer
Z−1 and A
Explanation
Solution
After β+(+1e0) emission atomic number decreases by one and mass number remain unchanged. γ-emission, there will be no change on mass number and atomic number.