| A | B |
| covalent bonding | sharing of electrons |
| crystal lattice | regular repeating arrangement of solids ie. salt |
| diatomic element | elements that exist in nature combined ExO2 |
| electron affinity | tendency of an atom to attract other atoms |
| ion | a charged atom + or - |
| ionization energy | amount of energy needed to remove an electron from nuetral atom |
| metallic bond | a bond between two metals caused by sea of electrons |
| molecule | smallest unit of a covalently bonded substance |
| oxidation number | combining capacity of an atom-# of e gain, loss or shared |
| polyatomic ion | group of covalently bonded elements acting like one atom EX CO2 |
| valence electrons | electrons in the outermost shell |