Which one is harder graphite or diamond

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Solution

Diamond
The molecular structure is different. Carbon atoms in graphite are bonded in layers with only weak covalent bonds holding the layers together. When you write with a pencil some of the layers detach from the pencil lead and attach to the paper. Carbon atoms in diamondare bonded in a stronger tetrahedron pattern.

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Similar questions

(a) Write two points of difference in the structures of diamond and graphite.
(b) Explain why graphite can be used as a lubricant but diamond cannot.
(c) Explain why diamond can be used in rock drilling equipment but graphite cannot.
(d) State one use of diamond which depends on its 'extraordinary brilliance' and one use of graphite which depends on its being 'black and quite soft'.

Q. Which one of the following statements is incorrect about graphite and diamond?

Q. Define electrical conductivity. Which one is the good conductor between diamond and graphite?

Q. Statements: All coals are diamonds.
All diamonds are graphite.
No graphite is carbon.
Conclusions: I. All graphites are diamonds.
II. All coals are graphite.

Q. One gram mole of graphite and diamond were burnt to form

{C O}_{2}

gas.

C_{g r a p h i t e} + O_{2} (g) ⟶ C O_{2} (g); Δ H^{o} = - 399.5 k J

C_{d i a m o n d} + O_{2} (g) ⟶ C O_{2} (g); Δ H^{o} = - 395.4 k J

then, which of the following is the correct about diamond and graphite?

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