In β-decay, the Q-value of the process is E. Then
KE of a beta-particle cannot exceed E.
KE of anti-neutrino emitted lies between zero and E
NZ ratio of the nucleus is altered.
Mass number (A) of the nucleus is altered.
Theoretical
During β decay of stationary nucleus, an electron is observed with a KE of 1.0 MeV. From this what can be concluded about Q value of the decay?