The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to +3 state is :
A
[Fe(phen)3]2+
B
[Zn(phen)3]2+
C
[Co(phen)3]2+
D
[Ni(phen)3]2+
2
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of
the following splitting patterns? (relative orbital energies not on scale).
A
B
C
D
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
The crystal field stabilization energy (CFSE) of [Fe(H2O)6]Cl2 and K2[NiCl4] respectively, are :
A
– 0.4 $$\Delta $$0 and – 0.8 $$\Delta $$t
B
– 0.6 $$\Delta $$0 and – 0.8 $$\Delta $$t
C
– 2.4 $$\Delta $$0 and – 1.2 $$\Delta $$t
D
– 0.4 $$\Delta $$0 and – 1.2 $$\Delta $$t
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Three complexes,
[CoCl(NH3)5]
2+(I),
[Co(NH3)5H2O]3+ (II) and
[Co(NH3)6]
3+(III)
absorb light in the visible region. The correct order of the wavelength of light absorbed by them is :
