86. Solving a chemistry problem

2. Given that the coordination number of the complexing agent is 6, write the coordination formula of the complex compound, give a name. Write the ionization equations for the complex compound and the expression for the instability constant of the complex ion:
a) Co(CN)3 • KCN • 2H2O;
b) Co(SCN)3 • NH4SCN • 2NH3;