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Which of the following carbonyls will have the strongest C – O bond

Which Of The Following Carbonyls Will Have The Strongest C Chemistry Question

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:

  1. Elements of which of the following groups will form anions most readily ?
  2. Which of the following is a coordination compound
  3. The electronic configuration of a noble gas is
  4. If active mass of a 6% solution of a compound is 2, its molecular weight will be
  5. Which of the following is not hydrolysed easily

Topics: Coordination Compounds (87)
Subject: Chemistry (2512)

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