The 17-electron complex possesses an EAN of 37. To achieve kinetic stability in accordance with Sidgwick's EAN rule, this species is most likely to act as:

Question

The 17-electron complex $[Mn(CO)_6]$ possesses an EAN of 37. To achieve kinetic stability in accordance with Sidgwick's EAN rule, this species is most likely to act as:

Prashant Kotian · Accepted Answer

Correct answer: B. Complexes that have an EAN greater than the nearest noble gas configuration (e.g., EAN = 37 compared to Krypton = 36) tend to lose electrons to attain the stable noble gas configuration. By losing an electron, the complex acts as a reducing agent. . The resulting cation has an EAN of 36.

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