Multiple Choice QuestionsThe number of unpaired electrons in[NiCl4]2-, Ni(CO)4 and (Cu(NH3)4]2+ respectively are
0, 2, 1
2, 0, 1
0, 2, 1
2, 2, 0
The pair having the same magnetic moment is:
[At. No. : Cr=24, Mn=25, Fe=26, Co=27]
[Cr(H2O)6 ]2+ and [Fe(H2O)6 ]2+
[Mn(H2O)6 ]2+ and [Cr(H2O)6 ]2+
[CoCl4 ]2− and [Fe(H2O)6 ]2+
[CoCl4 ]2− and [Fe(H2O)6 ]2+
Which 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
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
A.
It is diamagnetic in gaseous state
D.
It combines with oxygen to form nitrogen dioxide
NO is paramagnetic in the gaseous state because, in a gaseous state, It has one unpaired electron.
Total number of electron present = 7+8 = 15e-
Hence, there must be the presence of unpaired electron in a gaseous state while in a liquid state, it dimerises due to the unpaired electron.
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]
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