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Question: Answered & Verified by Expert
Match the complexes in Column I with their properties listed in Column II. Indicates your answer by darkening the appropriate bubbles of $4 \times 4$ matrix given in the ORS.

ChemistryCoordination CompoundsJEE AdvancedJEE Advanced 2007 (Paper 1)
Options:
  • A
    A-p, r; B-p, q, s; C-p; D-q, r
  • B
    A-p, s; B-p, r, s; C-p, s; D-q, r
  • C
    A-p, q, s; B-p, r, s; C-q, s; D-q, s
  • D
    A-r, s; B-q; C-p; D-p, q, s
Solution:
2122 Upvotes Verified Answer
The correct answer is:
A-p, q, s; B-p, r, s; C-q, s; D-q, s
(A) $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left[\left(\mathrm{H}_2 \mathrm{O}\right)_2\right] \mathrm{Cl}_2 p, q, s\right.$
Oxidation state $\mathrm{Co}$ is $+2$
$\Rightarrow$ Paramagnetic, exhibits geometrical isomerism.
(B) $\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] p, r, s$
$\mathrm{dsp}{ }^2$-hybridisation
$\mathrm{Pt}^{2+}$, diamagnetic square planar, geometrical isomerism
(C) $q, s$ (D) $q, s$

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