1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following Coordination entities exhibits Facial and Meridional isomerism?

A
$$ \left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_3\left(\mathrm{NO}_2\right)_3\right] $$
B
$$ \left[\mathrm{Co}(\text { en })_2 \mathrm{Cl}_2\right]^{+} $$
C
$$ \left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Br}_2\right] \mathrm{NO}_3 $$
D
$$ \left[\mathrm{Co}(\text { en })_3\right] \mathrm{Cl}_3 $$
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The complex which does not show optical isomerism is

A
cis $$-\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right] \mathrm{Cl}$$
B
cis $$-\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}$$
C
cis $$-\left[\mathrm{CoCl}(\mathrm{en})_2\left(\mathrm{NH}_3\right)\right]^{2+}$$
D
cis $$-\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$$
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The oxidation state of nickel in [Ni(CO$$_4$$)] is

A
1
B
2
C
3
D
0
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Which type of ligand is EDTA?

A
Monodentate
B
Hexadentate
C
Bidentate
D
Tridentate
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