Question:
Which one of the following statements is CORRECT?
Which one of the following statements is CORRECT?
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π-accepting ligands like CO and CN\(^-\) can stabilize metal complexes by back-donating electron density into metal d-orbitals.
Updated On: Dec 12, 2025
- BF\(_3\) is a stronger Lewis acid than BCl\(_3\).
- CO and CN\(^-\) are good π-accepting ligands.
- cis-Diaminedichloroplatinum(II) has zero dipole moment.
- Central atom in BCl\(_3\) is sp\(^2\) hybridized.
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the statements.
- (A) BF\(_3\) is not a stronger Lewis acid than BCl\(_3\); in fact, BCl\(_3\) is a stronger Lewis acid due to the larger size of Cl\(^-\) compared to F\(^-\).
- (B) CO and CN\(^-\) are indeed good π-accepting ligands, as they have empty molecular orbitals that can accept electron density from metal centers.
- (C) cis-Diaminedichloroplatinum(II) (commonly known as cisplatin) does have a dipole moment due to its asymmetrical arrangement of ligands.
- (D) The central atom in BCl\(_3\) is sp\(^2\) hybridized, but this statement alone is misleading in this context.
Step 2: Conclusion.
The correct answer is (B) CO and CN\(^-\) are good π-accepting ligands.
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