I can tell you know this, I’m just tacking it on for those who don’t:
Why do the nuclei stick together at all, once you’ve pushed them together? Because the nuclear force, which is attractive instead of repulsive, is just a little bit stronger. OK, so why then doesn’t the nuclear force just pull all atoms together? Because it is short range, and only works once the nuclei are “touching.”
I can tell you know this, I’m just tacking it on for those who don’t:
Why do the nuclei stick together at all, once you’ve pushed them together? Because the nuclear force, which is attractive instead of repulsive, is just a little bit stronger. OK, so why then doesn’t the nuclear force just pull all atoms together? Because it is short range, and only works once the nuclei are “touching.”