Why is diamond harder than graphite?
Understand the Problem
The question is asking for the reason why diamond has a greater hardness compared to graphite. This relates to the different structural arrangements and bonding of carbon atoms in each form. Diamond has a rigid lattice structure with strong covalent bonds, whereas graphite has layers of carbon atoms that can slide over each other, making it softer.
Answer
Diamond is harder due to strong tetrahedral covalent bonds, whereas graphite is softer due to weak Van der Waals forces between layers.
The final answer is that diamond is harder than graphite because of the stronger tetrahedral covalent bonds in diamond, compared to the weak Van der Waals forces holding the layers together in graphite.
Answer for screen readers
The final answer is that diamond is harder than graphite because of the stronger tetrahedral covalent bonds in diamond, compared to the weak Van der Waals forces holding the layers together in graphite.
More Information
Diamond and graphite are both forms of carbon, but their different structures result in vastly different physical properties.
Tips
Avoid confusing the layering structure of graphite with the tetrahedral structure of diamond.
