Classify the solids based on different binding forces.

Dear student,

Classification of solid on the basis of bonding in between the constituent atoms/molecules:
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1)Molecular solid:
Type of bond present in between the molecule : weak Van der waal forces.or Hydrogen bonds.
Here the constituents are generally polar or non-polar atoms or molecules. It may be of two types polar molecular solid and non-polar molecular solid on the basis of bonding shown in chart below.
Example : S₈ , H₂O etc. Molecules of sulfur (S₈) are held together weak intermolecular forces. This type of solid may not have a high melting point. Molecular solids may be fairly soft and can be easily distorted or warn away by very less amount of energy.

2)Covalent solids
Type of bond present in between the constituent atoms/molecule :covalent bond. Here the constituents are generally non-metals. Bond is formed by sharing of electrons.
Example:  Diamonds . In diamond the constituent carbon atoms are held together by covalent bond.  This type of solid tends to have a high melting point and are normally quite hard.  For example, diamond melts at 3600ºC.  They may be crystalline or amorphous.

3)Ionic solids 
Type of bond in between the constituent atom /molecules : ​ionic bond .The constituent species are present in form of ions.there is electrostatic force of attraction in between the opposite charges.
Example : NaCl. Here the constituents are Na⁺ and Cl^-.  Ionic solids tend to have a high melting points

4)Metallic solids
Type of bond ; metallic 
constituent atoms are metal atoms.    
Example: like metallic copper lattice .Metals can have low melting points and also tend to be soft.  

Regards