The mismatched combinations are:
A. Chlorophyll – Co
B. Water hardness – EDTA
C. Photography –
D. Wilkinson catalyst –
E. Chelating ligand – D-Penicillamine

Question

The mismatched combinations are:
A. Chlorophyll – Co
B. Water hardness – EDTA
C. Photography – 
D. Wilkinson catalyst – 
E. Chelating ligand – D-Penicillamine

Canvas Classes · Accepted Answer

Strategy:
 Biological and industrial coordination compounds feature specific central metal ions that are characteristic of their function.

Step 1: Verify each combination
- A. Chlorophyll: Contains Magnesium (), not Cobalt (). This is a mismatch.
- B. EDTA: Used to estimate water hardness (, ). Correct.
- C. Photography: Uses sodium thiosulfate to remove unexposed  by forming a soluble complex like , not . This is a mismatch.
- D. Wilkinson catalyst:  contains Rhodium. Correct.

Step 2: Identif

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