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Which of the following carbonyls will have the strongest C – O bond
Options
(a) Mn(CO)₆⁺
(b) Cr(CO)₆
(c) V(CO)₆⁻
(d) Fe(CO)₅
Correct Answer:
Mn(CO)₆⁺
Explanation:
The presence of positive charge on the metal carbonyl would resist the flow of the metal electron charge to π*-orbitals of CO. This would increase the CO bond order and hence CO in a metal carbonyl cation would absorb at a higher frequency compared to its absorption in a neutral metal carbonyl.
Related Questions: - Which of the following hydrogen bonds are strongest in vapour phase
- Which one of the following transition metals ions shows magnetic moment of 5.92
- If 200 mL of gas at 27°C is cooled to 7°C at constant pressure, its final volume will be
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- In electrolysis of NaCl when Pt electrode is taken then H₂ is liberated at cathode
Topics: Coordination Compounds
(87)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following hydrogen bonds are strongest in vapour phase
- Which one of the following transition metals ions shows magnetic moment of 5.92
- If 200 mL of gas at 27°C is cooled to 7°C at constant pressure, its final volume will be
- In graphite C atom is in …state
- In electrolysis of NaCl when Pt electrode is taken then H₂ is liberated at cathode
Topics: Coordination Compounds (87)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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