Density Error...

[BOBwatches2muchtv]

[o)]If density is the mass-volume relationship, what occupies the voids between the areas of two atoms, since total area of an atom is never completely contacting it's neighbors... empty space?[8)][?]

[russ_watters]

Quite simply, mass/volume density is virtually always discussed on a macroscopic level. So the voids you are talking about are not relevant.