Which of the following statements is in correct?
In K4[Fe(CN)6] the ligand has satisfied both primary and secondary valencies of ferrous ion.
In [Cu(NH3)4]SO4, the ligand has satisfied only secondary valency of copper.
In K3[Fe(CN)6], ligand has satisfied only secondary valency of ferric ion
In K3[Fe(CN)6], ligand has satisfied both primary and secondary valencies of ferric ion.
Why?
