In `beta`-decay, the Q-value of the process is E. Then

In a beta -decay

In beta -decay, the nuclei emit

In beta-"decay", the total number of particles in the nucleus

When nucleus of an electrically neutral atom undergoes a radioactive decay process, it will remain neutral after the decay if the process is (a) An alpha - decay (b) A bete^(o+) -decay (c ) A gamma -decay (d) A K - caputure process

In beta- decay n//p ratio :

During a beta decay

Staements I: ._zX^4 undergoes 2 alpha -decays, 2 beta -decays (negative beta ) and 2 gamma -decays. As a result, the daughter product is ._z-2X^(A-B) . Staements II: In beta -decay, the mass number decreases by 4 unit and atomic number decreases by 2 unit. In beta -decay (negative beta ), the mass number remains unchanged and atomic number increases by 1 unit. In gamma -decay, mass number and atomic number remain unchanged.

A radioactive nucleus can decay by two different processes. The mean value period for the process is Z_(1) and that for the second process is Z_(2) . The effective mean value period for the two processes is: