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bondings revised, simple covalent (they have strong intra molecular forces…
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simple covalent
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Low melting and boiling point, so often liquid or gas at room temp (usually gas)
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giant lattice covalent
graphite (carbon)
has 3 bondings, with 1 free delocalised electron, which therefore allows it to conduct electricity. Has a layered hexagonal structure, and the weak intermolecular forces between the layers allow layers to slide over others with ease. Hence why graphite is used in pencils, leaving a layer of graphite on the paper
Diamond (carbon)
has 4 bondings, therefore making it rather strong, with a high bonding point
silica - silicon has six bondings with oxygen, and oxygen has two bondings with silicon.
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