(d) A solution of [Ni(HO)]+ is green and paramagnetic (u =2.90 BM), whereas a solution of [Ni(CN)4] is colorless and diamagnetic. Give a qualitative explanation for these observations (2 Marks) (e) Calculate the ligand field stability energy (LFSE) and the magnetic susceptibility of the following species (3 Marks) (i) [Fe(CN)6]4- (ii) [CoC14]- (iii) [IrBr4]- (f) Set up a microstate table for a p configuration, determine the free ion terms and organize the resultant terms in order of increasing energy (5 Marks) (g) Explain the relative magnitudes of the crystal field splitting (A.) in the following pair of compounds (2 Marks) (i) [CoF6] (A. = 13, 100cm) and Co(NH3)6]+ (A. = 22, 900 cm) Page 1 of 2 CHEM 821 (ii) [Fe(HO)]+ (A. = 14, 000 cm) and [Fe(CN)6] (A. = 32, 000 cm)