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Olympiad workbookNSECCoordination Compounds

The correct order of CFSE of the following complex ions is [ Zn ( NH ₃ )₄ ]²⁺, [ Co ( NH ₃ )₆ ]²⁺, [ Co ( NH ₃ )₆ ]³⁺, [ Ir ( NH ₃ )₆ ]³⁺

Options

A[ Ir ( NH ₃ )₆ ]³⁺> [ Co ( NH ₃ )₆ ]³⁺> [ Co ( NH ₃ )₆ ]²⁺> [ Zn ( NH ₃ )₄ ]²⁺
B[ Zn ( NH ₃ )₄ ]²⁺> [ Co ( NH ₃ )₆ ]²⁺> [ Co ( NH ₃ )₆ ]³⁺> [ Ir ( NH ₃ )₆ ]³⁺
C[ Ir ( NH ₃ )₆ ]³⁺> [ Co ( NH ₃ )₆ ]³⁺> [ Zn ( NH ₃ )₄ ]²⁺> [ Co ( NH ₃ )₆ ]²⁺
D[ Co ( NH ₃ )₆ ]³⁺> [ Ir ( NH ₃ )₆ ]³⁺> [ Co ( NH ₃ )₆ ]²⁺> [ Zn ( NH ₃ )₄ ]²⁺

Correct answer

A. [ Ir ( NH ₃ )₆ ]³⁺> [ Co ( NH ₃ )₆ ]³⁺> [ Co ( NH ₃ )₆ ]²⁺> [ Zn ( NH ₃ )₄ ]²⁺

Step-by-step solution

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