O2 molecules consists of two oxygen atoms. In the molecule, Nuclear force between the nuclei of two atoms.
(A) is not important because Nuclear forces are short ranged
(B) is as important as electrostatic force for binding the two atoms
(C) cancels the repulsive electrostatic force between the nuclei
(D) not important because oxygen nucleus have equal no. of neutrons and protons
Choose the correct answer from the options given below :

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.