Then I have no idea what you mean by "neutralize them". The only way to neutralize a charge is to combine it with a identical charge of an opposite sign
First you say "I have no idea" then you proceed with the very definition of how to neutralize charges, are you deliberately trying to pull my leg here(?) Please don't answer my question, it's rhetorical.
Then you say "but electrons in the free electron model don't require neutralization - they are inside of a lattice that contains the positive charge and the whole system is already electrically neutral"
I never said that I wanted to neutralize those electrons, that was an example of electron mobility as you claimed you were perplexed about that concept.
This is going nowhere fast. Please delete my account and my question, obviously I made a mistake by signing up here.
Thank you in advance.