26 Questions
The complex compound shown in the example exhibits linkage isomerism.
False
The complex compound has a red color and is easily dissociated with acid.
True
The complex compound has a coordination sphere that only involves the cation.
False
Coordination isomerism occurs when the cation and anion of a complex compound exchange ligands.
True
The complex compound has a yellow color and is not easily dissociated with acid.
True
In the complex [FeIII(CN)6]3-, the oxidation state of the central metal ion is II.
False
The coordination number of [FeIII(CN)6]3- is 6.
True
The ligand in the complex [FeIII(CN)6]3- is a neutral molecule.
False
The charge of the complex [FeIII(CN)6]3- is +3.
False
In the complex [FeIII(CN)6]3-, the central metal ion forms a bond with each CN- ligand through a sigma bond.
True
In Ma2b type complexes, 'a' and 'b' are bidentate ligands.
False
Cis and Trans forms are easily separated by different physical means.
True
In [M(AB)2]n type complexes, 'AB' represents a symmetric bidentate ligand.
False
M in Ma2b type complexes represents a monodentate ligand.
False
Cis and Trans forms of Ma2b type complexes have the same structure.
False
Ionization isomerism is a type of isomerism where the same empirical formula gives different crystalline forms.
False
In the complex [CoIII(NH3)5 Br] SO4, the sulphate ion is a part of the coordination sphere.
False
All the chlorine atoms in the complex [CrIII(H2O)6 ] Cl3 are precipitated with AgNO3.
True
Ligand isomerism is a type of isomerism where the same ligand can coordinate with the central metal ion through different atoms.
False
The complex [Co(en)2 (C6 H 4CH 3 NH 2 )]Cl3 exhibits linkage isomerism.
False
Hydrate isomerism is a type of isomerism where the same empirical formula gives different ions in solution or ionization.
False
The ligand field affects all five d-orbitals in the same way, resulting in a higher energy level.
False
The d-orbitals in the central ion remain degenerate when the ligands are arranged in an octahedral way.
False
The arrangement of ligands around the central ion has no effect on the energy levels of the d-orbitals.
False
The energy level of the d-orbitals in the central ion is lowered due to the repulsion between the ligands and the d-orbitals.
False
The five d-orbitals in the central ion are all alike and have the same energy level.
False
Study Notes
Coordination Number
- Represents the total number of chemical bonds formed between the central metal ion and the donor atoms of the ligands.
Isomerism
Ionization Isomerism
- Complexes with the same empirical formula that give different ions in solution or ionization.
- Example: [CoIII(NH3)5 Br] SO4 and [CoIII(NH3)5 SO4 ] Br are ionization isomers.
Hydrate Isomerism
- Example: 3 isomers of [Cr(H2O)6]Cl3, differing in color and precipitate reaction with AgNO3.
Ligand Isomerism
- Some ligands themselves are capable of existing as isomers.
- Example: [Co(en)2 (C6 H 4CH 3 NH 2 )]Cl3, with ortho, para, and meta isomers.
Linkage Isomerism
- Found in complexes where ligands can coordinate with the central metal ion through either of two atoms.
- Example: [Co(NH3)4(NO2)]Cl2 and [Co(NH3)4(ONO)]Cl2, differing in color and acid dissociation.
Coordination Isomerism
- Results from an exchange of ligands between the two coordination spheres of a complex compound with both cation and anion complex.
- Examples include Ma2b c type complexes and [M(AB)2]n type complexes.
Complex Geometries
- Ma2b c type complexes can exhibit cis and trans forms.
- [M(AB)2]n type complexes, with unsymmetrical bidentate ligands, can lead to differences in d-orbital energy levels due to ligand field effects.
Understand the concept of coordination number, its representation, and its application in chemistry. Learn how to calculate the coordination number with examples.
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