1.

What do you understand by bond pairs and lone pairs of electrons ? Illustrate by giving one example of each type .

Answer»

Solution :Covalent BONDS are formed by mutual sharing of elecrons between the two atoms . The shared pairs of
electrons THUS present between the BONDED atoms are called bond pairs.
All the electrons of an atom MAY not participate in the bonding . The electron pairs present on the atoms
which do not take in bonding are called lone paris of electrons . For example ,in` CH_(4)(H:overset(H)overset(. .)underset(. .)C:H)`,
there are only 4 bond pairs in ` H_(2) OCH_(4)(H:overset(. .)underset(. .)C:H)` , there are two bond pairs and two lone pairs .


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