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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
Select the true statement from the following for metal carbonyls ?
  • A
    $\pi$ -backbonding strengthnes $M-C$ bond order as well as $CO$ bond order
  • B
    $\pi$-backbonding weaknes $M-C$ bond order as well as $CO$ bond order
  • C
    $\pi$-backbonding weaknes $M-C$ bond order but strengthens $CO$ bond order
  • ✓
    $\pi$-backbonding strengthnes $M-C$ bond order & weakens $CO$ bond order
✓

Answer

Correct option: D.
$\pi$-backbonding strengthnes $M-C$ bond order & weakens $CO$ bond order
d

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