CoCl 4 2- forms a tetrahedral complex ion and Co(CN) 6 3- forms an octahedral complex ion.

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CoCl42- forms a tetrahedral complex ion and Co(CN)63- forms an octahedral complex ion. What is wrong about the following statements concerning each complex ion and the d orbital splitting diagrams?

a. CoCl42- is an example of a strong-field case having two unpaired electrons. 

b. Because CN- is a weak-field ligand, Co(CN)63- will be a low-spin case having four unpaired electrons.  

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Chemistry An Atoms First Approach

ISBN: 9781305079243

2nd Edition

Authors: Steven S. Zumdahl, Susan A. Zumdahl

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