system
Given the following post, respond as if you're commenting on Reddit:
human
Protons in a nucleus are held together by nuclear force, but since they are positively charged, must they all be repelling each other as well?
gpt
They do, and that's why very heavy nuclei are not stable. All that repelling starts to add up, whereas the binding forces are more local. Eventually, after cramming enough particles in a single nucleus, the electric repulsion becomes too strong, and the whole thing splits apart.