Multiple Choice QuestionsWhich one of the following complexes shows optical isomerism?
cis[Co(en)2Cl2]Cl
trans[Co(en)2Cl2]Cl
[Co(NH3)4Cl2 ]Cl
[Co(NH3)4Cl2 ]Cl
The number of geometric isomers that can exist for square planar [Pt (Cl) (py) (NH3) (NH2OH)]+ is (py = pyridine)
2
3
4
4
The Colour of KMnO4 is due to
M → L charge transfer transition
d-d transition
L →M charge transfer transition
L →M charge transfer transition
C.
L →M charge transfer transition
KMnO4 → K+ + MnO-4
Therefore,
In MnO4-, Mn has +7 oxidation state having no electron in d- orbitals.
It is considered that higher the oxidation state of metal, greater is the tendency to occur L →M charge transfer because ligand is able to donate the electrons into the vacant d- orbital of metal.
Since, charge transfer is Laporte as well as spin allowed, therefore, it shows colour.
Which of the following compounds will exhibit geometrical isomerism?
1-phenyl-2-butene
3-phenyl-1-butene
2-phenyl-1-butene
2-phenyl-1-butene
Which of the following compounds is not coloured yellow?
Zn2[Fe(CN)6]
K3[Co(NO2)6]
(NH4)3[As(Mo3O10)4]
(NH4)3[As(Mo3O10)4]
The octahedral complex of a metal ion M3+ with four Monodentate Ligands, L1, L2, L3 and L4 absorb wavelengths in the region of red, green, yellow and blue respectively. The increasing order of ligand strength of the four ligands is
L4< L3<L2<L1
L1<L3<L2<L4
L3<L2<L4<L1
L3<L2<L4<L1
Which of the following properties are not shown by NO?
It is diamagnetic in gaseous state
It is a neutral oxide
It combines with oxygen to form nitrogen dioxide
It combines with oxygen to form nitrogen dioxide
Which of the following complex species is not expected to exhibit optical isomerism?
[Co(en)3]3+
[Co(en)2Cl2]+
[Co(NH3)3Cl3]
[Co(NH3)3Cl3]
Which one of the following molecules is expected to exhibit diamagnetic behaviour?
C2
O2
N2
N2
Which among the following will be named as dibromidobis(ethylene diamine)chromium(III) bromide?
[Cr(en)3]Br3
[Cr(en)2Br2]Br
[Cr(en)Br4]-
[Cr(en)Br4]-
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