COMEDK · Chemistry · 4. Chemical Bonding and Molecular Structure

Pick up the correct statement.

A Dipole moment of ammonia is due to orbital dipole and resultant diapole in same direction.
B \(\mathrm{O}_2, \mathrm{H}_2\) shown bond diapole due to polarisation.
C Dipole moment is scalar quantity.
D In \(\mathrm{BF}_3\) bond dicopoles are zero but dipole moment is higher.

Verified Solution

Answer & Solution

Correct Answer

(A) Dipole moment of ammonia is due to orbital dipole and resultant diapole in same direction.

Step-by-step Solution

Detailed explanation

Option (a) is the correct option. In ammonia, As, nitrogen is more electronegative than hydrogen, the resultant dipole moment adds up in the same direction. Dipole moment is a vector quantity. \(\mathrm{O}_2\) and \(\mathrm{H}_2\) are homoatomic molecules thus, show no dipole.

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.

Same subject

Explore more questions on app

From COMEDK

Explore more questions on app