Question

Example for covalent bond having two lone pair of electrons

Answer 1

H2O compound has two lone pairs

It( oxygen atom) goes sp3 hybridization

So it gets 4 equal hybrid orbitals

In that four 2 are already paired

And remaining two forms bond pairs with hydrogen atom

So it has two lone pairs and two bond pairs

Hope this helps you

Answer 2

$\bold{COVALENT \: BOND}$

▶Bond formed by the sharing of electrons between the two or more non metals.

▶The covalent bonds are held by weak Vander Waal's force .

▶They have weak force of attraction among the compounds.

$\bold{LONE \: PAIR}$

Pair of electrons which remains unshared with any other atom are known as lone pairs of electrons.

◼$\bold{In \: water \: molecule \: there \: are \: two \: lone \: pairs \: because }$

Vakency of hydrogen is +1 so it needs to share one electron so it needs one electron to be stable like nearest noble gas helium. Valency of oxygen is -2 so it needs two electrons to be stable like nearest noble gas argon .

During formation of water molecules, two hydrogen atom and one oxygen atom , oxygen shares it two electrons each with hydrogen atoms with two single covalent bonds .while its two lone pairs remains unaffected.