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Which among the following will be named as dibromido bis(ethylenediamine) chromium (III) bromide?

1. [Cr(en)2]Br3
2. [Cr(en)2Br2]Br
3. [Cr(en)Br4]-
4. [Cr(en)Br2]Br

Correct answer: [Cr(en)2Br2]Br

Solution

The correct option, [Cr(en)2Br2]Br, indicates that there are two ethylenediamine (en) ligands and two bromide (Br) ligands coordinated to the chromium ion, which aligns with the naming convention of dibromido bis(ethylenediamine) chromium (III) bromide.

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