MHT CET · Chemistry · Coordination Compounds

According to Werner’s theory the geometry of the complex is determined by

A Only from the primary valence is space
B Number and position of the primary valences in space
C Number and position of the secondary valences in space
D Only from the position of secondary valence in space

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Answer & Solution

Correct Answer

(C) Number and position of the secondary valences in space

Step-by-step Solution

Detailed explanation

Werner’s theory was used to describe the structure and formation of complex compounds or coordination compounds. According to this theory the primary valency gives the oxidation number and the secondary valency gives the coordination number. Also, the geometry of the complex is determined by number and position of secondary valences is space as the ligand satisfying secondary valences are always directed towards fixed position in space.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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