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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
Select the correct $\text{IUPAC}$ name for $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{2+}$.
  • A
    Hexammoniacobaltate$(II)$ ion
  • B
    Hexaamminecobaltate$(II)$ ion
  • C
    Hexammoniacobalt$(II)$ ion
  • ✓
    Hexaamminecobalt$(II)$ ion
✓

Answer

Correct option: D.
Hexaamminecobalt$(II)$ ion
In $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{2+}$ the oxidation state of $CO$ is $2.$ So the correct $\text{IUPAC}$ name is hexaamminecobalt$(II)$ ion.

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