Relier Pairs Atomic Structure MatchingVersion en ligne 8.5AB par Courtney Cox 1 Reactive Atom 2 charge of electrons 3 charge of neutron 4 Stable Atom 5 valence electrons 6 charge proton 7 cloud 8 atomic mass = 9 nucleus no charge, 0 sad atom, doesn't have a full valence shell (less then 8) so it wants to bond with others area surround the nucleus electrons farthest from the nucleus, responsible for reactivity/bonding happy atom! Has a full valence shell (8ve-) center of an atom, contains protons and neutrons positive + protons + neutrons negative -