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NEET2007ChemistryCoordination CompoundsActual

Assertion : ( C - O ) bond in metal carbonyl is long. Reason : There is delocalisation of electrons from filled (d ) orbitals into the empty orbitals on the ( CO ) ligands.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

( C - O ) bond in metal carbonyl is long as ligated ( CO ) has lower bond order. The lower B.O. is due to the transfer of metal (d ) electrons into the ( ^* ) orbitals of ligated ( CO ).

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