Molecular crystal
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A molecular crystal is a crystal with a recognizable molecules that are held together by weak bonding such as van der Waals forces or hydrogen bonding as opposed to covalent or metallic bonds.
An example is rock candy.
[edit] External links
- Types of Crystals – About.com
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In such type of crystal, the constituent particles are molecules. In a molecular crystal, the molecules are formed due to covalent bonds between the atoms.If the centre of negative charges and the centre of positive charges coincide in a molecule, such a molecule is called a non polar molecule.The bond between polar molecules is called a dipole-dipole bond whereas the bond between non-polar molecules is called Van-der-waal's bond.Molecular solids are usually soft and have low melting point and they are poor conductors of electricity.
