A) \[\left[ Rh{{\left( PP{{h}_{3}} \right)}_{3}}Cl \right]:\] Wilkinson's catalyst
B) \[{{\left[ Co{{\left( CO \right)}_{4}} \right]}^{-}}:\]Bond order of \[Co-CO\] bond is greater than one
C) \[[Zn{{\left( N{{H}_{3}} \right)}_{4}}][Be{{\left( OH \right)}_{4}}]\]: colorless complex
D) \[{{[Cr{{\left( CN \right)}_{6}}]}^{3-}}\]: Inner orbital low spin complex
Correct Answer: D
Solution :
[d] \[{{[Cr{{\left( CN \right)}_{6}}]}^{3-}}\]: Hybridization: \[{{d}^{2}}s{{p}^{3}}\] High or low spin is not defined because \[C{{r}^{3+}}\] is an example of \[{{d}^{3}}\] system of configuration.
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