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The correct IUPAC name for [CrF2(en)2]Cl is:

1. Chlorodifluoridobis (ethylene diamine) chromium (III)
2. Chlorodifluoridoethylenediaminechromium (III) chloride
3. Difluoridobis (ethylene diamine) chromium (III) chloride
4. Difluorido (ethylene diamine) chromium (III) chloride

Correct answer: Difluoridobis (ethylene diamine) chromium (III) chloride

Solution

The correct IUPAC name is 'Difluoridobis(ethylene diamine)chromium(III) chloride'. The ligands are named in alphabetical order, and the oxidation state of chromium is +3, as determined by charge balance.

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