When a ligand can bind through two donor atoms, then the ligand is known as __________
Unidentate ligand
Didentate ligand
Tridentate ligand
Polydentate ligand
In metal carbonyl having general formula M(CO)x where, M = metal, x = 4 and the metal is bonded to
carbon and oxygen
C ≡ O
oxygen
carbon
Which is equal to the co-ordination number and is fixed for a metal ?
Primary valence
Secondary valence
Number of metal ions
Quaternary valence
Which one of the following complexes will have four isomers ?
[Co(en)3]Cl3
[Co(en)2Cl2]Cl
[Co(PPh3)2(NH3)Cl2]Cl
[Co(PPh3)3Cl]Cl2
The structure and hybridisation of Si(CH3)4 is
octahedral, sp3d
tetrahedral, sp3
bent, sp
trigonal, sp2
Who was the first to formulate his ideas about the structure of co-ordination compounds ?
Rutherford
Alfred Werner
Robert Boyle
Avogadro
The complex ion [Co(NH3)6]3+ is formed by sp3d2 hybridisation. Hence, the ion should posses
octahedral geometry
tetrahedral geometry
square planar geometry
tetragonal geometry
In the separation of Cu2+ and Cd2+ of IInd group in qualitative analysis of cations, tetrammine copper (II) sulphate and tetrammine cadmium (II) sulphate react with KCN to form the corresponding cyano complexes, which one of the following pairs of the complexes and their relative stability enables the separation of Cu2+ and Cd2+ ?
K3[Cu(CN)4] : less stable and K2[Cu(CN)4] : more stable
K3[Cu(CN)4] : more stable and K2[Cd(CN)4] : less stable
K2[Cu(CN)4] : less stable and K2[Cd(CN)4] : more stable
K2[Cu(CN)4] : more stable and K2[Cd(CN)4] : less stable
The formula of dichlorobis (urea) copper (II) is
[Cu{O=C(NH2)2Cl}]Cl
[CuCl2{O=C(NH2)2}2]
[Cu{O=C(NH2)2}]Cl2
[CuCl2{O=C(NH2)2H2}]
An atom or a small group of atoms datively bonded by its lone electrons pair to a central atom or cation is
Ligand
Central metal
Complex
Neutral molecule
