Bonding-Valence Bond Approach and Basic Ideas of Crystal Field Theory, Colour and Magnetic Properties NEET Questions

Inorganic Chemistry - Coordination Compounds

Bonding-Valence Bond Approach and Basic Ideas of Crystal Field Theory, Colour and Magnetic Properties MCQ Questions


13.
According to Crystal Field Theory, strong field ligands cause
A.
Electron pairing
B.
No splitting of d-orbitals
C.
No effect
D.
Expansion of d-orbitals
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ANSWER :
A. Electron pairing
14.
In an octahedral complex, the d-orbitals split into
A.
Two sets of three
B.
Three sets of two
C.
eg and t₂g sets
D.
All remain degenerate
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ANSWER :
C. eg and t₂g sets
15.
Magnetic moment is calculated using the formula
A.
√n(n+1)
B.
√n
C.
2n
D.
√n–1
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ANSWER :
A. √n(n+1)
16.
Which ligand causes strong crystal field splitting?
A.
H₂O
B.
Cl⁻
C.
CN⁻
D.
F⁻
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ANSWER :
C. CN⁻
17.
Which complex is tetrahedral and paramagnetic?
A.
[Ni(CN)₄]²⁻
B.
[NiCl₄]²⁻
C.
[Cu(NH₃)₄]²⁺
D.
[Zn(NH₃)₄]²⁺
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ANSWER :
B. [NiCl₄]²⁻
18.
The color in d-block metal complexes is due to
A.
π–π* transitions
B.
s→p transitions
C.
d–d transitions
D.
p→d transitions
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ANSWER :
C. d–d transitions