Ammonia gas does not evolve from the complex FeCl₃.4NH₃ but it gives white precipitate with aqueous solution of AgNO₃. Coordination number of central metal ion in the above complex is six. Give IUPAC name of the complex

The complex 3 3 FeCl .4NH , coordination number of central metal Fe ion is six. The complex compound does not evolve the ammonia gas but it gives white precipitate with aqueous solution of AgNO₃ this proves the presence of one - Cl ion in ionization sphere, Hence, the coordination compound is 2 3 4 FeCl (NH ) Cl . The IUPAC name of complex compound is dichloro tetraamine ferrum (III) chloride. Hence, the correct option is (d).