The number of non-polar molecules from the following is HF , H 2 O , SO 2 , H 2 , CO 2 , CH 4 , NH 3 , HCl , CHCl 3 , BF 3

Step-by-step solution

The molecules which have perfect geometry and no lone pairs are zero dipole moment molecules. Those molecules termed as non-polar molecules. Amongst the given compounds, CH 4 , CO 2 , H 2 , BF 3 are non polar molecules. H 2 O has two lone pairs and two bond pairs. SO 2 has two sigma bond pairs and one lone pair. CHCl 3 has net dipole moment because the bond moments do not cancel with each other. NH 3 have one lone pair and three bond pairs. In HF bond moment is the dipole moment. Hence, all these molecules have som