In diamond, each carbon shares electrons with four other carbon atoms - forming four single covalent bonds.
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What are the physical properties of diamond?
It has a very high melting point and is very hard; it doesn't conduct electricity and is insoluble in water and organic solvents.
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Why does diamond have a high melting point?
Very strong carbon-carbon covalent bonds have to be broken throughout the structure before melting occurs.
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Why is diamond very hard?
Very strong carbon-carbon covalent bonds have to be broken throughout the structure before melting occurs.
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Why can't diamond conduct electricity?
All the electrons are held tightly between the atoms, and aren't free to move.
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Why is diamond insoluble in water and organic solvents?
There are no possible attractions which could occur between solvent molecules and carbon atoms which could outweigh the attractions between the covalently bonded carbon atoms.
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What is the structure of graphite?
Graphite has a layer structure; in a layer, each carbon atom uses three of its electrons to form simple bonds to its three close neighbours. This leaves a fourth electron in the bonding level which delocalises over the whole layer of carbon atoms.
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What are the properties of iodine?
It has a low boiling point, is very, very slightly soluble in water, and dissolves freely in organic solvents.
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Other cards in this set
Card 2
Front
What are the physical properties of diamond?
Back
It has a very high melting point and is very hard; it doesn't conduct electricity and is insoluble in water and organic solvents.
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