1
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The species that has a spin-only magnetic moment of 5.9 BM, is :
(Td = tetrahedral)
A
[MnBr4]2– (Td)
B
[NiCl4]2– (Td)
C
Ni(CO)4 (Td)
D
[Ni(CN)4]2– (square planar)
2
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the complex ions,
trans-[Co(en)2Cl2]+ (A) and
cis-[Co(en)2Cl2]+ (B).
The correct statement regarding them is :
A
both (A) and (B) can be optically active.
B
both (A) and (B) can not be optically active.
C
(A) can not be optically active, but (B) can be optically active.
D
(A) can be optically active, but (B) can not be optically active.
3
JEE Main 2020 (Online) 5th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The values of the crystal field stabilization energies for a high spin d6 metal ion in octahedral and tetrahedral fields, respectively, are :
A
–0.4$$\Delta $$0 and –0.27$$\Delta $$t
B
–1.6$$\Delta $$0 and –0.4$$\Delta $$t
C
–0.4$$\Delta $$0 and –0.6$$\Delta $$t
D
–2.4$$\Delta $$0 and –0.27$$\Delta $$t
4
JEE Main 2020 (Online) 4th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The Crystal Field Stabilization Energy
(CFSE) of [CoF3(H2O)3] ($$\Delta $$0 < P) is :
A
-0.8 $$\Delta $$0
B
-0.4 $$\Delta $$0
C
-0.8 $$\Delta $$0 + 2P
D
-0.4 $$\Delta $$0 + P
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