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NEET2018ChemistryCoordination CompoundsActual

Which of the following can be reduced easily?

Options

  1. AV ( CO )₆
  2. BMo ( CO )₆
  3. C[ Co ( CO )₄ ]⁻
  4. DFe ( CO )₅

Correct answer

A. V ( CO )₆

Step-by-step solution

V ( CO )₆ can be easily reduced to [ V ( CO )₆ ]⁻ . V ( CO )₆ has a total of 17 bonding electrons, hence it is very reactive and unstable. [ V ( CO )₆ ] on the other hand has complete set of 18 bonding electrons as an electron is added into the bonding orbital when V ( CO )₆ gets reduced to [ V ( CO )₆ ]⁻ . All others have 18 bonding electrons.

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