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Question
Ice is an example of ............ crystal.
Ice is an example of ............ crystal.
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Solution
The correct option is B molecular
Molecular Crystals: In these crystals, molecules occupy the lattice points of the unit cells except in solidified noble gases in which the units are atoms, where the binding is due to van der Waal's forces and dipole-dipole forces. Since van der Waal's forces are non-directional, the structure of the crystal is determined by geometric consideration only.
Ice is the common example in which dipole-dipole forces of attraction (hydrogen bonding) are active. Many organic and inorganic crystals involve hydrogen bonds. Although these are comparatively weaker but play a very important role in determining the structures of substances. Example, polynucleotides, proteins etc.
Hence, the correct option is B
Molecular Crystals:
In these crystals, molecules occupy the lattice points of the unit cells except in solidified noble gases in which the units are atoms, where the binding is due to van der Waal's forces and dipole-dipole forces. Since van der Waal's forces are non-directional, the structure of the crystal is determined by geometric consideration only.
Ice is the common example in which dipole-dipole forces of attraction (hydrogen bonding) are active. Many organic and inorganic crystals involve hydrogen bonds. Although these are comparatively weaker but play a very important role in determining the structures of substances. Example, polynucleotides, proteins etc.
Ice is the common example in which dipole-dipole forces of attraction (hydrogen bonding) are active. Many organic and inorganic crystals involve hydrogen bonds. Although these are comparatively weaker but play a very important role in determining the structures of substances. Example, polynucleotides, proteins etc.
Hence, the correct option is B
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