Polar and Nonpolar Covalent Bonds. Covalent bonding involves sharing electrons between atoms. Nonpolar covalent bond – equal sharing of electrons between two atoms. Both atoms have same attraction for shared pair. Example : H – H.
The atom that has a greater attraction for shared electrons takes on a partialnegativecharge and the atom with a weaker attraction takes on a partial positivecharge.
Can use the difference in electronegativities between two atoms to predict the type of bond formed between the atoms.
(a) C and S
(b) Na and O
(c) P and Cl