Coordination CompoundHard
Question
Which statement(s) about co-ordination number of a cation is/are true ?
Options
A.Most metal ions exhibit only a single characteristic co-ordination number
B.The co-ordination number is equal to the number of ligands bonded to the metal atom
C.The co-ordination number is determined solely by the tendency to surround the metal atom with the same number of electrons as one of the rare gases.
D.For most cations, the co-ordination number depends on the size, structure and charge of the ligands.
Solution
(A) is not correct, as metal can exhibit more than one coordination number, e.g., Cu2+ has 4 and 6 coordination number.
(B) The coordination number of the central atom/ion is determined by the number of sigma bonds between the ligands and the central atom/ions i.e. the number of ligand donor atoms to which the metal is directly attached
(C) It is incorrect statement
(D) Tetrahedral complexes i.e. coordination number 4 are favoured by steric requirements, either simple electrostatic repulsion of charge ligands or vander wall′s repulsions of large one.
(B) The coordination number of the central atom/ion is determined by the number of sigma bonds between the ligands and the central atom/ions i.e. the number of ligand donor atoms to which the metal is directly attached
(C) It is incorrect statement
(D) Tetrahedral complexes i.e. coordination number 4 are favoured by steric requirements, either simple electrostatic repulsion of charge ligands or vander wall′s repulsions of large one.
Create a free account to view solution
View Solution FreeMore Coordination Compound Questions
[Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 are related to each other as :...The Mohr′s salt is shown by :...Wilkinson′s catalyst react with H2 to form an octahedral complex in which Rh (Z = 45) has the following electronic...[Fe(en)2(H2O)2]2+ + en → complex(X). The correct statement about the complex (X) is :...The magnetic moment of a salt containing Zn2+ ion is :...