| A | B |
|---|
| chemical bonding | combining of atoms of elements to form new substances |
| valence electron | electron in the outermost energy level of an atom |
| ionic bonding | bonding that involves the transfer of electrons |
| ion | an atom that has become charged due to electron gain or loss |
| covalent bonding | bonding that involves the sharing of electrons |
| electron-dot diagram | diagram that shows valence electrons as dots |
| diatomic element | element comprised of two atoms covalently bonded together |
| molecule | combination of atoms formed by a covalent bond |
| metallic bond | bond formed by atoms of metals |
| oxidation number | number of electrons an atom gains, loses, or shares |
