The IUPAC name of is:

Question

The IUPAC name of  is:

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Strategy:
 Applying IUPAC nomenclature rules: cations are named before anions, ligands are alphabetically ordered, and the central metal is followed by its oxidation state in Roman numerals.

Step 1: Identify the components
The complex is .
- Cation (outside): Potassium ().
- Complex Anion: .

Step 2: Name the complex anion
- Ligand:  is oxalato. There are 3, so trioxalato.
- Central Metal: Cobalt. Since it's an anion, it becomes cobaltate.
- Oxidation state: .

Step 3: Combine
Potassium trioxal

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