For the complexes $(A) \ CoCl_3 \cdot 6NH_3$,$(B) \ CoCl_3 \cdot 5NH_3$,and $(C) \ CoCl_3 \cdot 4NH_3$,if the secondary valency of $Co$ is $6$,what is its primary valency in each case?

What is the total number of ions released in the aqueous solution of ferric hexacyanoferrate $(II)$?

One mole of the octahedral complex compound $Co(NH_3)_5Cl_3$ gives $3$ moles of ions on dissolution in water. One mole of the same complex reacts with excess of $AgNO_3$ solution to yield two moles of $AgCl_{(s)}$. The structure of the complex is :

Which type of addition compound retains its identity in solution?

Identify the anionic ligand from the following.

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: