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KCET · Chemistry · Coordination Compounds

Which formula and name combination is incorrect?

  1. A \(\begin{aligned} & \mathrm{K}_3\left[\mathrm{Al}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]-\text { Potassium } \\ & \text { trioxalatoaluminate (III) }\end{aligned}\)
  2. B \(\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right]-\) Diamminechloridonitrito -N-platinum (II)
  3. C \(\left[\mathrm{CoCl}_2(\mathrm{en})_2\right] \mathrm{Cl}-\)
    Dichloridodiethylenediammine cobalt (II) chloride
  4. D \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right) \mathrm{Cl}\right] \mathrm{Cl}_2-\)
    Tetraammineaquachloridocobalt (HI) chloride
Verified Solution

Answer & Solution

Correct Answer

(C) \(\left[\mathrm{CoCl}_2(\mathrm{en})_2\right] \mathrm{Cl}-\)
Dichloridodiethylenediammine cobalt (II) chloride

Step-by-step Solution

Detailed explanation

Formula and name combination given in
option (c) is incorrect. Its correct form is as follows.
\(\left[\mathrm{CoCl}_2(\mathrm{en})_2\right] \mathrm{Cl}\) - Dichloridebis(ethylene diamine)
- cobalt (III) chloride.