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  • Coordination Compounds
  • What is the coordination number of [Cr(C2O4)3]3-?
Multiple choice

What is the coordination number of [Cr(C2O4)3]3-?

  1. 1

  2. 2

  3. 4

  4. 6

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The oxalate ion (C2O4)2- is a bidentate ligand, coordinating through two oxygen atoms. In [Cr(C2O4)3]3-, three oxalate ligands each donate two electron pairs, giving 3×2=6 donor atoms bonded to chromium, so CN=6.

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