NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Two atoms X and Y are non-polar and electrically symmetrical What type of intermolecular force of attraction can be developed between them?
Options
- ADipole-induced dipole forces
- BLondon forces or dispersion forces
- CDipole-dipole forces
- DNo forces of any kind
Correct answer
B. London forces or dispersion forces
Step-by-step solution
In non-polar atom, a dipole may develop momentarily. If the atom X becomes unsymmetrical resulting in development of instantaneous dipole for a very short time, it distorts the electron density of Y which is close to it and dipole is induced in the atom Y. Temporary dipoles X and Y attract each other. This attraction is called London or dispersion force.