Introduction to Coordination Compounds NEET Questions

Inorganic Chemistry - Coordination Compounds

Introduction to Coordination Compounds MCQ Questions


7.
The crystal field splitting energy in octahedral complexes is denoted by:
A.
Δs
B.
Δo
C.
Δp
D.
Δt
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ANSWER :
B. Δo
8.
The relationship between crystal field splitting energy in tetrahedral (Δt) and octahedral (Δo) complexes for same metal and ligands is:
A.
Δt = 2Δo
B.
Δt = (9/4)Δo
C.
Δt = (4/9)Δo
D.
Δt = Δo/2
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ANSWER :
C. Δt = (4/9)Δo
9.
If Δo < P (pairing energy), the d4 metal ion will have configuration:
A.
t2g2 eg2
B.
t2g0 eg4
C.
t2g4 eg0 (low spin)
D.
t2g3 eg1 (high spin)
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ANSWER :
D. t2g3 eg1 (high spin)
10.
The colour of coordination compounds is due to:
A.
Charge transfer to solvent
B.
s-p transition
C.
d-d transition of electrons
D.
p-d transition
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ANSWER :
C. d-d transition of electrons
11.
Why is [Ti(H2O)6]3+ violet in colour?
A.
It has no d-d transition
B.
It absorbs blue-green light during d-d transition (t2g1 eg0 to t2g0 eg1)
C.
It absorbs violet light
D.
Ti3+ has no d-electrons
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ANSWER :
B. It absorbs blue-green light during d-d transition (t2g1 eg0 to t2g0 eg1)
12.
Anhydrous CuSO4 is white but CuSO4·5H2O is blue because:
A.
In presence of water (ligand), crystal field splitting causes d-d transition
B.
Sulphate becomes blue with water
C.
Water reflects blue light
D.
Cu2+ becomes Cu+ on hydration
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ANSWER :
A. In presence of water (ligand), crystal field splitting causes d-d transition