Question

Identify the coordination number of aluminium in potassium trioxalatoaluminate(III).

Options

• 2

• 4

• 6

• 12

Answer 1

6

Explanation:

K₃[Al(C₂O₄)₃] where \[\ce{C2O^{2-}4}\] is the bidentate ligand (donates through 2 donor atoms).

Hence, the coordination number of aluminium is 6.