An isomer of the complex Co(en)2(H2O)Cl2 , on reaction with concentrated H2SO4 it suffers loss in weight and on reaction with AgNO3 solution gives a yellow precipitate, which is insoluble in NH3 solution.
If all the ligands in the co-ordination sphere of the above complex are replaced by CN− ion, then the magnetic moment of the complex ion will be :
(1) 0.0 BM
(2) 5.9 BM
(3) 4.9 BM
(4) 1.73 BM