Advertisements
Advertisements
प्रश्न
Write four postulates of Werner’s theory.
Describe briefly the main postulates of Werner’s theory.
Advertisements
उत्तर
Postulates of Werner’s theory:
- Postulate (1): Unlike metal salts, the metal in a complex possesses two types of valencies: primary (ionizable) valency and secondary (nonionizable) valency.
- Postulate (2): The ionizable sphere consists of entities which satisfy the primary valency of the metal. Primary valencies are generally satisfied by anions.
- Postulate (3): The secondary coordination sphere consists of entities which satisfy the secondary valencies and are non ionizable. The secondary valencies for a metal ion are fixed and satisfied by either by anions or neutral ligands. Number of secondary valencies is equal to the coordination number
- Postulate (4): The secondary valencies have a fixed spatial arrangement around the metal ion.
APPEARS IN
संबंधित प्रश्न
Choose the most correct option.
The oxidation state of cobalt ion in the complex [Co(NH3)5 Br]SO4 is __________.
Answer the following in one or two sentences.
What is the shape of a complex in which the coordination number of the central metal ion is 4?
The charge on metal ion in [Fe(CN)6]4− is _________
Hybridization of cobalt in [Co(NH3)6]3+ complex ion is _____________
The geometry of [CoF6]3– complex ion is _______.
Write coordination number of Fe3+ in [Fe(C2O4)3]3− complex ion.
Write oxidation number of iron in [Fe(CO)5]
Distinguish between double salt and coordination complex.
Define Anionic sphere complex.
Define coordination number.
What is the secondary valence of CO3+ ion according to Werner's theory in [Co(NH3)4Cl2]+?
The hybridization of cobalt in [CoF6]3− and [Co(NH3)6]3+ are ____________ respectively.
According to Werner's theory the geometry of the complex is determined by ______.
The coordination number of central metal atom/ion in a complex is ____________.
Which among the following is a correct formula of Pentammineaquacobalt (III) iodide?
Which oxidation states CORRECTLY represent the usual range exhibited by the stated metal?
According to Werner's theory based on experiment the formula of coordination compound is CoCl3.3NH3 then the molar conductance in mho mol−1 and number of Cl− ions precipitated by AgNO3 respectively is ____________.
What is the value of primary valence of copper chloride according to Werner's theory?
Which of the following is a property of coordination compound and not of double salt?
Which of the following types of valences, according to Werner's theory is also called as primary valence?
Which ligand among the following has highest splitting power of d-orbitals of central metal ion?
Define coordination sphere. Give example.
Give the primary and secondary valencies of cobalt in the coordination compound [Co(NH3)6]Cl3.
Write postulates of Werner’s theory of co-ordination complexes.
