Question

how many bond pairs and lone pairs are in NH3 and H2O​

Answer 1

Answer:

NH3

Lone pair in NH3=1

Bond pairs in NH3=3

H2O

Lone pair in H2O=2

Bond pair in H2O=2

Answer 2

If there is one lone pair of electrons and three bond pairs the resulting molecular geometry is trigonal pyramidal (e.g. NH3).

If there are two bond pairs and two lone pairs of electrons the molecular geometry is angular or bent (e.g. H2O).

hope it helps