Question
Explain the types of covalent bond with suitable examples.

Answer

The three types of covalent bonds are as follows.
$i.$ Single bond: When two combining atoms share one electron pair, the covalent bond between them is called single bond.
Single bond is observed in number of molecules.
e.g. $H_2, Cl_2,$ water molecule, etc.
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$ii.$ Double bond: When two combining atoms share two pairs of electrons, the covalent bond between them is called a double bond, e.g. Double bond is present in $C_2H_4$ molecule
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$iii.$ Triple bond: When two combining atoms share three pairs of electrons, the covalent bond between them is called a triple bond, e.g. Triple bond is present in $N_2$ molecule.
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Note: Formation of covalent bonds in $CO_2, CCl_4 \ and \ C_2H_2:$
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