Question
Download Solution PDFCoordination number of Cr in potassium trioxalatochromate (III) is -
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Coordination Number in Coordination Complexes
- The coordination number of a central metal ion in a coordination complex is the number of ligand donor atoms to which the metal is directly bonded.
- Bidentate ligands count as two points of attachment to the central metal ion.
- The coordination number is key to understanding the geometry and bonding of the complex.
EXPLANATION:
- In potassium trioxalatochromate(III), the chemical formula is \(K_3[Cr(C_2O_4)_3]\) .
- Each oxalate ligand ( \(C_2O_4^{2-}\) ) is bidentate, meaning it coordinates through two oxygen atoms.
- With three oxalate ligands, the coordination number (number of donor atoms bonded to Cr) is:
- 3 ligands × 2 donor atoms/ligand = 6
The correct answer is 6
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