Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown by CN- ion towards metal species is
a, b
a, b, c
c, a
c, a
C.
c, a
CN- is a better complexing agent (C) as well as a reducing agent (A)
Thus properties (A) and (C) are shown
Property (C) Ni2+ + 4 CN- → [Ni(CN)4]2-
Property (A) CuCl2 + 5 KCN → K3[Cu(CN)4] + 1/2 (CN)2 + 2KCl
(CN- reduces Cu2+ to Cu+ )
The value of the ‘spin only’ magnetic moment for one of the following configurations is 2.84 BM. The correct one is
d4 (in strong ligand filed)
d4 (in weak ligand field)
d3 (in weak as well as in strong fields)
d3 (in weak as well as in strong fields)
For which of the following parameters the structural isomers C2H5OH and CH3OCH3 would be expected to have the same values?
Heat of vaporization
Gaseous densities at the same temperature and pressure
Boiling points
Boiling points
The coordination number of central metal atom in a complex is determined by
The number of ligands around a metal ion bonded by sigma bonds
The number of only anionic ligands bonded to the metal ion
The number of ligands around a metal ion bonded by sigma and pi- bonds both
The number of ligands around a metal ion bonded by sigma and pi- bonds both
Which one of the following complexes in an outer orbital complex?
[Fe(CN)6]4-
[Ni(NH3)6]2+
[Co(NH3)6]3+
[Co(NH3)6]3+
Coordination compound has great importance in biological systems. In this context which of the following statements is incorrect?
Chlorophylls are green pigments in plants and contain calcium
Carboxypeptidase – A is an enzyme and contains zinc
Cyanocobalamin is B12 and contains cobalt
Cyanocobalamin is B12 and contains cobalt
Which one the following has the largest number of isomers?
[Ru(NH3)4Cl2+]
[Co(en)2Cl2]+
[Ir(PR3)2H(CO)]2+
[Ir(PR3)2H(CO)]2+
The correct order of magnetic moments (spin only values in B.M.) among is
(Atomic numbers: Mn = 25; Fe = 26, Co =27)
[MnCl4]2- > [CoCl4]-2 > [Fe(CN)6]-4
[Fe(CN)6]-4 > [CoCl4]2- > [MnCl4]2-
[Fe(CN)6]4- > [MnCl4]2- > [CoCl4]2-
[Fe(CN)6]4- > [MnCl4]2- > [CoCl4]2-
Which of the following compound is not chiral?
1- chloropentane
3-chloro-2- methyl pentane
1-chloro -2- methyl pentane
1-chloro -2- methyl pentane
