In a $\mathrm{\beta }$ decay, the ratio of p/n of the nucleus is

The ratio of an atom's neutrons to its protons is known as the neutron to proton ratio. This ratio typically rises as the atomic number of a stable nucleus rises.
Beta decay raises the proton to neutron ratio. Eg-${ }_6^{14}\mathrm{C}{\to }^{14}\mathrm{N}+\mathrm{e}+{\mathrm{V}}_{\mathrm{e}}$ It is plain to see that the p/n rises.