system
Given the following post, respond as if you're commenting on Reddit:
human
How does a neutron become part of an atom without a positive or negative charge? Could electrons orbit lone neutrons? Does that already happen?
gpt
Neutrons don't have charge, but they *do* interact via the residual strong force. Protons and neutrons both do, and they form bound states. Then you have a bound nucleus with a positive electric charge given by the number of protons. And a positively-charged nucleus can form bound states with negatively-charged electrons via the Coulomb force.