Explain Werner's theory of coordination compounds with suitable example

Postulates:
1) Every complex compounds contain central metal atom (or) ion
2) The metal atom (or) ion shows two type of valencies they are
i) primary valency
ii) secondary valency.
Primary valency:
1) It is equal to central metal oxidation number
2) It is completely ionisable
3) It is satisfied by only anions
4) It is non directional
5) It is denoted by dotted lines (......)
Secondary valency:
1) It is equal to central metal coordination number
2) It is not ionisable
3) It is satisfied by negative ions and neutral molecules
4) It is directional
5) It is denoted by continuous lines (____)
$\text{ 1) }\left(\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right){\mathrm{Cl}}_3$

$\text{ 2) }\left(\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Cl}}_3\right)$