____ represents the empirical formula of an ionic compound, since they do not form true molecules, rather a coordinated lattice.

____ weight is the term used for ionic compounds "molecular" weight as no molecule actually exists, its just a lattice structure.

____ compounds form from elements of similar electronegativity.

Atomic weight is ____.

____ is a weighted average of the masses of the naturally occurring isotopes of an element, not their weights.

____ is the sum of the atomic weights of all the atoms in a molecule, and its units are atomic mass units (amu) per molecule.