You haven't got the first clue what you are talking about. This post proves you've never done any chemistry at all. Try looking at the periodic table and you'll see that Lithium and Beryllium are far lighter and less dense than most other materials. Metals have a wide range of densities and strengths. The highlighted part is total horse-plop. Why are you using the word molecule when you are talking about atomic bonding? You do realise that bond strength is not the only factor that affects a metal's density? Of course not.
Atomic bond strength in descending order
covalent > ionic > metallic > h-bonds > dipole-dipole > dispersion
Crystal structure (FCC, BCC, HCP etc), atomic radius, nuclear charge and the number of bonding orbitals have an effect. Most metals have d-orbitals which are relatively small. If you consider Lithium which has an s-orbital which is quite big relative to d-orbital you can see how the bonding orbitals have such an effect. Larger bonding orbital = larger electron cloud.
Oh and graphite is metallic bonded by the way and DOES conduct electricity. It's considered a semi-metal. Look up "Carbon Arc Lamp" you ignoramus.
Funny how diamond does not conduct, but graphite and graphene will, yet they are made of Carbon only. How does that work dusty? Magic? You haven't the first clue about atomic bonding or structure in materials. This is the stuff a 14 year old chemistry student will know. You don't know this and yet you claim a PhD that requires an advanced level/degree level in chemistry.
I love the way she uses micrometer scale when the actual scale for atomic bonding is orders of magnitude smaller. Typically measured in Angstroms (Å), 1 x 10 -10m.
Again it shows she has no understanding of the scales involved when anyone who has studied this basic science will know.
I don't respond to your nonsense however, on this occasion it's important to correct you so the reader learns something.
Why do you continue to spout crap when anyone can look up your absurd claims in 10 minutes and see you are full of it?