| A | B |
|---|
| covalent bonds | between metal and nonmetal |
| ionic bond | between metals and nonmetals |
| metallic bonds | between metals |
| ion | atom with a charge |
| valence electrons | electrons in outer shell where bonding occurs |
| anion | negatively charged ion |
| cation | positively charged ion |
| stable | atoms with a full outer shell of electrons |
| neutral | atoms with no charge (protons = electrons) |
| oxidation number | number of electrons gained or lost when combining |
