Which isotopes of aluminum are radioactive?
1 Answer
You might get a better answer on the physics forum, but AFAIK radioactivity is not related to unequal numbers of nuclear protons and neutrons.
Explanation:
The common radioactive isotope of
As said, radioactivity is not related to unequal numbers of protons and neutrons, but a non optimal combination of both or an excess of energy (metastable). Protons are positvely charged and repel each other. The more protons you try to fit into the nucleus (higher Z-values) the more neutrons you need to keep them together. You can see neutrons as the glue of the nucleus.
