Difference between polar and non-polar molecules
Basically polar molecules are forms when larger molecules break or cancel the polar bon between them. The molecule having one end is partially positive and one end is partially negative are called polar molecules and still they have a strong forces. Non-polar molecules are symmetrical type but they have weak force. The difference between them is as follows.
Polar molecules |
Non-polar molecules |
1) Polar molecules available as a strong force and they forms dipole-dipole bond or H-bond.
2) In polar molecules the electro negativity between atoms is less than 0.4. 3) Electrical poles are present in polar molecules. 4) As they forms dipole-dipole bond so net dipole moment is present in them. 5) Higher melting and boiling point is present in the polar molecules. 6) Polar molecules have low vapour pressure and high surface tension. 7) In polar molecules charge separation is present. 8) Examples: Water, Sulphur, etc. |
1) Non-polar molecules available as weakest force and they forms London disposed force.
2) In non polar molecules electro negativity between atoms is greater than 0.4. 3) Electrical poles are absent in non polar molecules. 4) As they don’t have dipole-dipole bond so net dipole moment is absent in them. 5) Higher melting and boiling point is absent in the non-polar molecules. 6) Non-polar molecules have high vapour pressure and low surface tension. 7) In non-polar molecules charge separation is absent. 8) Examples: Oil, Carbon dioxide, pentane, etc. |