1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I
Coordination entity
List II
Wavelength of light absorbed in nm
A. $$\mathrm{[CoCl(NH_3)_5]^{2+}}$$ I. 310
B. $$\mathrm{[Co(NH_3)_6]^{3+}}$$ II. 475
C. $$\mathrm{[Co(CN)_6]^{3-}}$$ III. 535
D. $$\mathrm{[Cu(H_2O)_4]^{2+}}$$ IV. 600

Choose the correct answer from the options given below :

A
A-IV, B-I, C-III, D-II
B
A-III, B-II, C-I, D-IV
C
A-III, B-I, C-II, D-IV
D
A-II, B-III, C-IV, D-I
2
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The hybridization and magnetic behaviour of cobalt ion in $$\mathrm{[Co(NH_3)_6]^{3+}}$$ complex, respectively is :

A
$$\mathrm{sp^3d^2}$$ and paramagnetic
B
$$\mathrm{sp^3d^2}$$ and diamagnetic
C
$$\mathrm{d^2sp^3}$$ and diamagnetic
D
$$\mathrm{d^2sp^3}$$ and paramagnetic
3
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following cannot be explained by crystal field theory?

A
The order of spectrochemical series
B
Stability of metal complexes
C
Magnetic properties of transition metal complexes
D
Colour of metal complexes
4
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The primary and secondary valencies of cobalt respectively in $$\mathrm{[Co(NH_3)_5Cl]Cl_2}$$ are :

A
2 and 8
B
2 and 6
C
3 and 5
D
3 and 6
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