| A | B |
|---|
| binary compound | a compound composed of two different elements |
| empirical formula | the symbols for the elements combined in a compound with subscripts showing the smallest whole-number mole ratio of the different atoms in the compound |
| formula mass | the sum of the average atomic masses of all the atoms represented in the formula of any molecule, formula unit, or ion |
| monatomic ion | an ion formed from a single atom |
| nomenclature | a naming system |
| oxidation number | a number assigned to an atom in a molecular compound or molecular ion that indicates the general distribution of electrons among the bonded atoms |
| oxidation state | a number assigned to an atom in a molecular compound or ion that indicates the general distribution of electrons among the bonded atoms |
| oxyanion | a polyatomic ion that contains oxygen |
| percentage composition | the percentage by mass of each element in a compound |
| salt | an ionic compound composed of a cation and the anion from an acid |
