What is the coordination number of $Fe$ in $[Fe(CN)_6]^{3-}$?

What is the coordination number of the central metal ion in $[Fe(C_2O_4)_3]^{3-}$?

Which complex among the following gives a white precipitate on treatment with an aqueous solution of barium chloride?

$A$ coordination complex compound of cobalt has a molecular formula containing five ammonia molecules,one nitro group,and two chlorine atoms for one cobalt atom. One mole of this compound produces three moles of ions in an aqueous solution,and upon reacting with an excess of $AgNO_3$,it forms $AgCl$ precipitate. The ionic formula for this complex would be:

What is the coordination number of $Co$ in the complex $[CoF_6]^{3-}$?

How many ions are produced in the solution of $[Pt(NH_3)_6]Cl_4$?