1
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to +3 state is : JEE Main 2019 (Online) 12th April Morning Slot Chemistry - Coordination Compounds Question 131 English
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
JEE Main 2019 (Online) 12th April Morning Slot Chemistry - Coordination Compounds Question 130 English Option 1
B
JEE Main 2019 (Online) 12th April Morning Slot Chemistry - Coordination Compounds Question 130 English Option 2
C
JEE Main 2019 (Online) 12th April Morning Slot Chemistry - Coordination Compounds Question 130 English Option 3
D
JEE Main 2019 (Online) 12th April Morning Slot Chemistry - Coordination Compounds Question 130 English Option 4
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
The INCORRECT statement is :
A
the color of [CoCl(NH3)5]2+ is violet as it absorbs the yellow light.
B
the gemstone, ruby, has Cr3+ ions occupying the octahedral sites of beryl.
C
the spin-only magnetic moment of [Ni(NH3)4(H2O)2]2+ is 2.83 BM.
D
the spin-only magnetic moments of [Fe(H2O)6]2+ and [Cr(H2O)6]2+ are nearly similar.
4
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
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