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1
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair of metal ions that can give a spin only magnetic moment of 3.9 BM for the complex [M(H2O)6]Cl2, is -
A
V2+ and Fe2+
B
V2+ and Co2+
C
Co2+ and Fe2+
D
Cr2+ and Mn2+
2
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The metal d-orbitals that are directly facing the ligands in K3[Co(CN)6] are -
A
dx2$$-$$y2 and dz2
B
dxy, dxz and dyz
C
dxz, dyz and dz2
D
dxy and dx2 $$-$$ y2
3
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Mn2(CO)10 is an organometallic compound due to the presence of -
A
C–O bond
B
Mn – Mn bond
C
Mn – O bond
D
Mn – C bond
4
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The number of bridging CO ligand(s) and Co-Co bond(s) in Co2(CO)8, respectively are :
A
2 and 0
B
0 and 2
C
4 and 0
D
2 and 1
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