When covalent bond is formed between two similar atoms, the shared pair of electrons is equally attracted by the two atoms. As a result electron pair is situated exactly between the two identical nuclei. The bond so formed is called

When covalent bond is formed between two similar atoms, e.g. in H2,O2,Cl2, N2 or F2, the shared pair of electrons is equally attracted by the two atoms. As a result electron pair is situated exactly between the two identical nuclei. The bond so formed is called non-polar covalent bond.