Introduction to Coordination Compounds NEET Questions

Inorganic Chemistry - Coordination Compounds

Introduction to Coordination Compounds MCQ Questions


13.
The crystal field stabilization energy (CFSE) for [Co(NH3)6]3+ is:
A.
-1.2 Ξ”o
B.
-0.4 Ξ”o
C.
-2.4 Ξ”o
D.
0
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ANSWER :
C. -2.4 Ξ”o
14.
Which of the following d-orbitals point along the axes in an octahedral complex?
A.
dxy and dxz
B.
dxy and dyz
C.
dxz and dyz
D.
dx2-y2 and dz2
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ANSWER :
D. dx2-y2 and dz2
15.
Which is paramagnetic among the following?
A.
[Co(CN)6]3-
B.
[Co(NH3)6]3+
C.
[CoF6]3-
D.
[Co(en)3]3+
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ANSWER :
C. [CoF6]3-
16.
The colour of [Cu(H2O)4]2+ is:
A.
Green
B.
Red
C.
Yellow
D.
Blue
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ANSWER :
D. Blue
17.
The complementary color observed when a complex absorbs yellow light is:
A.
Violet
B.
Red
C.
Green
D.
Blue
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ANSWER :
A. Violet
18.
How does CFT explain why [Mn(H2O)6]2+ has 5 unpaired electrons but [Mn(CN)6]4- has only 1?
A.
Both have same electron arrangement
B.
Mn changes oxidation state in CN- complex
C.
H2O is weak field giving high spin t2g3 eg2 while CN- is strong field giving low spin t2g5 eg0
D.
CN- is a weaker ligand than H2O
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ANSWER :
C. H2O is weak field giving high spin t2g3 eg2 while CN- is strong field giving low spin t2g5 eg0