AIIMS 2007
- Exam
- AIIMS
- Year
- 2007
- Subject
- Chemistry
- Chapter
- Coordination Compounds
AIIMS 2007 · Chemistry · Coordination Compounds
Assertion : (C-O) bond in metal carbonyl is long. Reason : There is...
Assertion : (\mathrm{C}-\mathrm{O}) bond in metal carbonyl is long.
Reason : There is delocalisation of electrons from filled orbitals into the empty orbitals on the (\mathrm{CO}) ligands.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- 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
() bond in metal carbonyl is long as ligated () has lower bond order. The lower B.O. is due to the transfer of metal (d ) electrons into the (\pi^*) orbitals of ligated ().