system
Given the following post, respond as if you're commenting on Reddit:
human
Is the ionic radius of Cu2+ bigger than Cu as an atom? If so then why?

I could not find any help on the internet. Any help would be very much appreciated :)
gpt
No, Cu2+ has fewer electrons than Cu. Whenever electrons are removed from an atom its radius gets smaller. This happens because electrons push against each other so as electrons are removed the outer ones can move closer. If you want to think about orbitals, Cu has an electron in the 4s1 orbital and Cu2+ does not.