A bond is (circle) polar/non-polar if the bonded atoms have different electroneg

Question

A bond is (circle) polar/non-polar if the bonded atoms have different electronegativities A molecule is (circle) polar/non- polar if it contains polar bonds and is symmetrical Match the type of molecule with its strongest intermolecular force. Polar molecule London dispersion non - polar molecule hydrogen bonding polar molecule with - OH group dipole-dipole Rank the following intermolecular forces from strongest to weakest (assuming similar molecular size). London dispersion hydrogen bonding dipole-dipole

Explanation / Answer

3) A Bond is POLAR if the bonded atoms have different electronegativities, because the electron cloud is shifted towards the atom having high electronegativity and charge separtion take place.

4) A bond is NON POLAR if it contains polar bonds and is symmetrical, Because in symmetrically distributed polar bonds , the bond dipoles cancels and do not create a molecular dipole.

5) Polar molecules - Dipole Dipole.

Non Polar molecules - Dispersion or london forces.

Polar molecules with -OH group - Hydrogen Bonding.

6) Hydrogen Bonding ( not a bond ) is a strongest force of attraction , then Dipole-Dipole is the intermediate in strength force of attraction and finally , the dispersion force is the weakest , because it is a temporary polarity (like making a paperclip magnetized)

Hydrogen Bonding > Dipole - Dipole Forces > Dispersion Forces

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