Consider the following statements:
According the Werner's theory.
(1) Ligands are connected to the metal ions by ionic bonds.
(2) Secondary valencies have directional properties
(3) Secondary valencies are non-ionisable
Of these statements :

Options

A. 1,2 and 3 are correct
B. 2 and 3 are correct
C. 1 and 3 are correct
D. 1 and 2 are correct

Answer

B

Explanation

According to Werner's theory statemens (2) and (3) are correct.
(1) Ligands are connected to the metal ion by coordinate covalent bond (dative bond ).
(2) Secondary valencies, i.e. coordination number give rise to stereochemistry of the complexes because of their directional properties.
(3) SEcondary valencies correspond to coordination number i.e. number of `sigma`-bond between metal ion and ligands.