A) \[Z-1\]and\[A-1\]
B) \[Z+1\] and A
C) \[Z-1\]and A
D) \[Z+1\]and\[A-1\]
Correct Answer: C
Solution :
Key Idea: \[\beta -\]rays are fast moving electrons. When there is an excess of protons in the nucleus and it is not energetically possible to emit an\[\alpha -\]particle,\[{{\beta }^{+}}\]decay occurs. Resulting in reducing atomic numbers by 1. New atomic number\[=Z-1,\]mass number\[=A\]Gamma ray emission occurs with p4 emission. Since, gamma rays have no charge or mass their emission does not change the chemical composition of the atom. Hence, atomic number\[=Z-1,\] mass number = A Note: During\[{{\beta }^{+}}\]decay, a positron (a particle with the same mass as an electron but. With positive charge) and a neutrino are released.
You need to login to perform this action.
You will be redirected in
3 sec
