Nuclei with odd number of protons and odd number of neutrons can break apart {radioactivity}|. Nuclei with even numbers of both protons and neutrons are stable, because orbits are full. Bigger nuclei are less stable, because neutron number is more than proton number. Radioactive decay happens randomly. Temperature, pressure, and other substances do not affect it. However, it can increase above 10^6 K.
Physical Sciences>Physics>Matter>Atom>Nucleus>Radioactivity
5-Physics-Matter-Atom-Nucleus-Radioactivity
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Date Modified: 2022.0224