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ChemistryNEET 2025Molecular orbital theory

Chemical Bonding and Molecular Structure

Given below are two statements:

Statement I: A hypothetical diatomic molecule with bond order zero is quite stable.

Statement II: As bond order increases, the bond length increases.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Both Statement I and Statement II are true
  2. B.Both Statement I and Statement II are false✓
  3. C.Statement I is true but Statement II is false
  4. D.Statement I is false but Statement II is true

Solution

Bond order zero means no net bonding — the molecule does not form (I false). Higher bond order means a shorter, stronger bond, so bond length decreases (II false).

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