AIIMS 2019 | Coordination Compounds Question 2 | Chemistry

$$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+} \text {, } \left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right]^{+2}$$

$$\begin{aligned} & {\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+}} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right]^{2+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}} \end{aligned}$$

$$\begin{aligned} & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+},\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+},} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right) \mathrm{Cl}\right]^{+2}} \end{aligned}$$

$$\begin{aligned} & {\left[\mathrm{Co}(\mathrm{NH})_5 \mathrm{Cl}\right]^{+2},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+},} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+},\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}} \end{aligned}$$

AIIMS 2019

MCQ (Single Correct Answer)

-0.33

Which of the following complex is optically inactive?

$$\left[\mathrm{RhCl}(\mathrm{CO})\left(\mathrm{PPh}_3\right)\left(\mathrm{NH}_3\right)\right]$$

$$\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$$

$$\left[\mathrm{Fe}(\mathrm{en})_2 \mathrm{Cl}_2\right]$$

$$\left[\mathrm{Pd}(\mathrm{en})_2 \mathrm{Cl}_2\right]$$

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

The electronic configuration of central metal atom/ion in $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$ is

$$t_{2 g}^5 e_g^0$$

$$t_{2 g}^4 e_g^2$$

$$t_{2 g}^4 e_g^3$$

$$t_{2 g}^6 e_g^0$$

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

The spin only magnetic moment of $$[\mathrm{MnBr}_4]^{2-}$$ is $$5.9 \mathrm{~BM}$$. The geometry of this complex ion is

tetrahedral

octahedral

trigonal pyramidal

square planar

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