Choose the Best Answer · Q6
Q.IUPAC name of the complex K₃[Al(C₂O₄)₃] is
(a) potassium trioxalatoaluminium(III)
(b) potassium trioxalatoaluminate(II)
(c) potassium trisoxalatoaluminate(III)
(d) potassium trioxalatoaluminate(III)
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Start your 14-day free trial to unlock the full solution →Step 1. K₃[Al(C₂O₄)₃] has 3 K⁺ counter ions, so the complex anion [Al(C₂O₄)₃] carries charge -3.
Step 2. Oxalate (C₂O₄²⁻, 'ox') is a bidentate anionic ligand named 'oxalato'; three of them are present.
Step 3. Charge balance: x + 3(-2) = -3, so x = +3, written (III).
Step 4. Since 'oxalato' does NOT itself contain a Greek-derived prefix syllable, the simple multiplying prefix 'tri' is used (not the alternate 'tris'), giving 'trioxalato'. …
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