1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following is an ambidentate ligand?

A

Ethane-1,2-diamine

B

Ethylenediaminetetraacetate ion

C

Thiocyanate

D

Oxalate

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

$$ \text { Match List I with List II : } $$

List I
(Complex/ion)
List II
(Shape/geometry)
A. $$
\left[\mathrm{Pt}\left(\mathrm{Cl}_2\right)\left(\mathrm{NH}_3\right)_2\right]
$$
I. Octahedral
B. $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3
$$
II. Trigonal bipyramidal
C. $$
\left[\mathrm{NiCl}_4\right]^{2-}
$$
III. Square planar
D. $$
\left[\mathrm{Fe}(\mathrm{CO})_5\right]
$$
IV. Tetrahedral
Choose the correct answer from the options given below :
A

A-III, B-IV, C-I, D-II

B

A-III, B-I, C-IV, D-II

C

A-IV, B-I, C-III, D-II

D

A-I, B-III, C-IV, D-II

3
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following are paramagnetic?

A. $\left[\mathrm{NiCl}_4\right]^{2-}$

B. $\mathrm{Ni}(\mathrm{CO})_4$

C. $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$

D. $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$

E. $\mathrm{Ni}\left(\mathrm{PPh}_3\right)_4$

Choose the correct answer from the options given below :

A
A and D only
B
A, D and E only
C
A and C only
D
B and E only
4
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of the wavelength of light absorbed by the following complexes is,

A. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$

B. $\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$

C. $\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_4\right]^{2+}$

D. $\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$

Choose the correct answer from the options given below:

A
C $<$ D $<$ A $<$ B
B
  C $<$ A $<$ D $<$ B
C
B $<$ D $<$ A $<$ C
D
B $<$ A $<$ D $<$ C

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