NTA Abhyas JEE Main2020ChemistryChemical Bonding and Molecular StructurePractice
Arrange the following molecules from most to least polar.
Options
- AIII > V > II > I = IV
- BII > IV > III > IV > I
- CIII > II > V > IV > I
- DV > III > II > IV = I
Correct answer
A. III > V > II > I = IV
Step-by-step solution
(i) lnC H 4 and CC l 4 being tetrahedral (symmetrical molecules), bond dipoles cancel one other resulting in zero dipole moment. (ii) As electronegativity difference between two bonded atoms increases, the bond polarity increases resulting into the increase in dipole moment.