How many ions per molecule are produced from the complex $[Co(NH_3)_6]Cl_2$ in solution?

Consider the following statements according to Werner's theory:
$(a)$ Ligands are connected to the metal ions by coordinate bonds.
$(b)$ Secondary valencies have directional properties.
$(c)$ Secondary valencies are non-ionisable.
Of these statements:

Which of the following has five donor (coordinating) sites?

The coordination numbers of $Fe$ in the complexes $[Fe(CN)_6]^{4-}$,$[Fe(CN)_6]^{3-}$,and $[FeCl_4]^{-}$ are respectively:

The sum of the coordination number and the oxidation number of the metal $M$ in the complex $[M(en)_2(C_2O_4)]Cl$ (where $en$ is ethylenediamine) is:

In the complex $[X(SO_4)(NH_3)_5]$,the coordination number and oxidation state of $X$ are,respectively: