Latest KVPY Aptitude Question SOLUTION: Among (i) [CO(NH3)6]Cl3, (ii) [Ni(NH3)6]Cl2, (iii) [Cr(H2O)6]Cl3, (iv) [Fe(H2O)6]Cl2 the complex which is diamagnetic is option (A) i (B) ii (C) iii (D) iv