Essential Chemistry for IGCSE - Structure And Bonding (Section 4 - No. 11)
What is the primary reason that graphite is soft, and can be used as a lubricant?
Strong covalent bonds.
Weak intermolecular forces between layers.
Presence of delocalized electrons.
Ionic bonds.
Explanation
Graphite has weak forces holding layers of carbon atoms together, hence acts as a lubricant.
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