MCQs on Crystal Field Theory Which of the following complexes shows zero crystal field stabilization energy? (a) [Co(H2O)6]3+ (b) [Fe(H2O)6]3+ (c) [Co(H2O)6]2+ (d) [Mn(H2O)6]3+ Answer: (b) Which of the following is paramagnetic? (a) [CoBr]42- (b) Mo(Co)6 (c) [Pt(en)Cl2] (d) [Co(NH3)6]3+…