The unequal sharing of bonded pair of electrons between two atoms in a molecule gives rise to:
Ionic bond
Polar covalent bond
Non-polar covalent bond
None of the above
This give rise to polarity in bonds.
In a polar covalent compound, electron pair/pairs between participating atoms are equally shared, whereas, in a non-polar covalent compound, electron pair/pairs between participating atoms are not equally shared.