The stability of atomic nuclei seems to be related to the ratio of: protons to electrons neutrons to protons isotopes to neutrons neutrinos to gamma rays

Question

The stability of atomic nuclei seems to be related to the ratio of:

protons to electrons

neutrons to protons

isotopes to neutrons

neutrinos to gamma rays

Answer 1

Neutrons to protons. Nuclei contain protons and neutrons, and these are typically most stable when evenly matched (same number of each). Unbalanced nuclei (too many neutrons, for example) are typically less stable, resulting in a relationship between stability and the neutron/proton ratio.