Types of chemical bonds.

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Chemical bond :- a bond between two atoms is formed when there is sharing of electrons or gain/loss  to form a stable compounds.

Type of chemical bonds :

1) covalent bond : it is formed when there is sharing of electrons between two atoms. Also known as π-π bond . ( Lateral overlap)
E.g -CH4 , CO.

2) coordinate- covalent bond : It is formed when there is sharing of lone pair of electrons between non-metal to metal.
E.g-.  Comples

3) ionic bond : it is formed by gain or loss of electrons between two atoms . Also known as  sigam bond ( axial overlap).
E.g -. NaCl.

4) Hydrogen bonds : it is formed due to polarity between two atoms . It is weak bond . It is formed between hydrogen & electronagative atom of another compound.

a) intermolecular hydrogen bonding : it is weak bond formed between hydrogen & electronegative atom of another compound.
e.g. H2O,NH3.

b) intermolecular hydrogen bonding: it is formed within same molecule between hydrogen & electronegative atom.
e.g CHCl3 , NH3.

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