1
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The set which does not have ambidentate ligand(s) is :

A
$$\mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}, \mathrm{NO}_{2}{ }^{-}, \mathrm{NCS}^{-}$$
B
$$\mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}$$, ethylene diammine, $$\mathrm{H}_{2} \mathrm{O}$$
C
$$\mathrm{NO}_{2}^{-}, \mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}$$, EDTA $$^{4-}$$
D
$$\mathrm{EDTA}^{4-}, \mathrm{NCS}^{-}, \mathrm{C}_{2} \mathrm{O}_{4}{ }^{2-}$$
2
JEE Main 2023 (Online) 11th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following complex has a possibility to exist as meridional isomer?

A
$$\mathrm{[Pt(NH_3)_2Cl_2]}$$
B
$$\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]$$
C
$$\left[\mathrm{Co}(\mathrm{en})_{3}\right]$$
D
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3}\left(\mathrm{NO}_{2}\right)_{3}\right]$$
3
JEE Main 2023 (Online) 10th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of the number of unpaired electrons in the given complexes is

A. $$\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$$

B. $$\left[\mathrm{Fe} \mathrm{F}_{6}\right]^{3-}$$

C. $$\left[\mathrm{CoF}_{6}\right]^{3-}$$

D. $$\left.[\mathrm{Cr} \text { (oxalate})_{3}\right]^{3-}$$

E. $$\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]$$

Choose the correct answer from the options given below:

A
E < A < B < D < C
B
A < E < D < C < B
C
A < E < C < B < D
D
E < A < D < C < B
4
JEE Main 2023 (Online) 10th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List - I
Complex
List - II
Crystal Field splitting energy ($$\Delta_0$$)
A. $${[Ti{({H_2}O)_6}]^{2 + }}$$ I. $$-1.2$$
B. $${[V{({H_2}O)_6}]^{2 + }}$$ II. $$-0.6$$
C. $${[Mn{({H_2}O)_6}]^{3 + }}$$ III. 0
D. $${[Fe{({H_2}O)_6}]^{3 + }}$$ IV. $$-0.8$$

Choose the correct answer from the options given below:

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