Is a diamond a single molecule?

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A diamond is not a single molecule but rather a crystalline structure composed of numerous carbon atoms bonded together in a tetrahedral arrangement through strong covalent bonds. These covalent bonds are significantly stronger than the ionic bonds found in substances like salt, which explains why diamonds are much harder to break. Additionally, diamonds can spontaneously convert back to graphite at standard temperature and pressure (STP), although this process occurs over a long period. The distinction between the bonding in diamonds and salt is highlighted, noting that while ionic bonds within NaCl are strong, the interactions between separate NaCl molecules are weaker, allowing for easier breakage compared to diamonds.
tribdog
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Is a diamond a single molecule?
 
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It's a crystalline lattice of LOTS of carbon atoms with lots of admixtures, too.
 
yes. pure diamond is a single molecule. It is a bunch of carbon molecules which have all covalently boded to each other in a tetrahedral arangement. The covalent bonds are stronger then ionic bonds which is why you can split a chunk of salt really easily, but with a diamond, tough luck. An interesting thing to note is that diamond spontaneously turns back into graphite at STP. But it takes a while.
 
mineys said:
But it takes a while.

Just a little while :biggrin:
 
mineys said:
yes. pure diamond is a single molecule. It is a bunch of carbon molecules which have all covalently boded to each other in a tetrahedral arangement. The covalent bonds are stronger then ionic bonds which is why you can split a chunk of salt really easily, but with a diamond, tough luck. An interesting thing to note is that diamond spontaneously turns back into graphite at STP. But it takes a while.

You can break a chunk of salt very much easier than a piece of diamond not because the ionic bonds are weaker than covanlent bonds. In diamond, molecules link togherther by covalent bonds. In NaCl , Na+ and Cl- are linked very tightly for ionic strong ionic bond. But linkages between one molecule NaCl and another molecule NaCl are not ionic, they are held by coulomb force which are weaker than Na+ and Cl-.
 

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