I don't know which ones r, could u add options, maybe?
A space-filling model shows the relative amount of space each atom takes up. In other words, a space-filling model can show relative sizes of atoms. However, unlike ball-and-stick or structural models, space-filling models do not show bond lengths clearly. Bonds are not really like sticks in a ball-and-stick model.
You would use a stopwatch. Hope this helps :D
Yes the volume would be a big fat 0.0000
