Answer:
Volume would be 13
Explanation:
Divide the mass by the density
65/5
Yes, because beryllium is less dense and harder than oxygen.
Do u have a picture if so post it please
They are particular solids.
As you go down a group on the periodic table, atomic radii tend to increase because elements with larger atomic numbers have more occupied electron levels which take up more space surrounding the nucleus.
I hope this helps.