1.1. This question is about substances with covalent bonds.

i) Draw a dot and cross diagram to show the outer shell electrons in a molecule of nitrogen, N₂

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 ii) Describe the forces of attraction in a covalent bond.

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1.2. The diagram shows three different structures of carbon.

Structure A	Graphite	C60 Fullerene

 i) Name structure A.

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 ii) Graphite and C₆₀ fullerene contain covalent bonds, but have different structures.

 Explain why C₆₀ fullerene has a much lower melting point than graphite.

 Refer to structure and bonding in your answer.

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