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Referring to molecular solids, matters’ elementary particles are molecules. Molecules exist as they are firmly packed and arranged to give rise to the formation of molecular solid. Moreover, molecular solids are separated into 3 basic categories as per the molecules’ nature:
Polar Molecular Solids
In the solid substances in which molecules are togetherly held with robust dipole-dipole forces, they are called the Polar Molecular Solids.
To form a molcules, atoms are combined which have different nature, let’s say, atoms of oxygen and sulphur are combined to sulphur dioxide (SO2) which is known as the polar molecular solid.
1. Polar Molecular Solids represents the below-mentioned properties:
Eg: (NH3) Ammonia and (SO2) Sulphur Dioxide
2. Non-polar Molecular Solids
The solid objects in which molecules are formed of the identical types of atoms are known Non-Polar Molecular Solids. Non-Polar Molecular Solids’ dipole moment is zero plus the action of forces are not so strong London dispersion forces in between the constituent molecules.
Non-Polar Molecular Solids’ characteristics are mentioned below:
3. Hydrogen-Bonded Molecular Solids
The forces present are known to be responsible for molecular attraction in Hydrogen-Bonded Molecular Solids, which are called Hydrogen Bonds. The melting and boiling points of this type of molecular solid are much higher as compared to that of polar and non-polar type of molecular solids.
Hydrogen Bonded Molecular Solids are having polar covalent bonds that exist between F and H; N or O atoms.
The strong bond of hydrogen binds or firmly holds together molecules of these types of solids such as H2O (ice).
Hydrogen-Bonded Molecular Solids’s characteristics:
Eg: Ice (H2O)
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