Match List I with List II LIST – I (Complex ion) LIST – II (Electronic Configuration A. C r H 2 O 6 3 + I. t 2 g 2 e g 0 B. F e H 2 O 6 3 + II. t 2 g 3 e g 0 C. N i H 2 O 6 2 + III. t 2 g 3 e g 2 D. V H 2 O 6 3 + IV. t 2 g 6 e g 2 Choose the correct answer from the options given below :

Step-by-step solution

The t 2 g (triplet, lower energy) orbitals are the d xy , d xz and d yz orbitals. The e g (doublet, higher energy) orbitals are the d z 2 and d x 2 - y 2 orbitals. These split d-orbitals are called t 2 g and e g because they are split by the effect of the surrounding ligand ions in a crystal field. Cr H 2 O 6 3 + Contains Cr 3 + : Ar 3 d 3 : t 2 g 3 e g o Fe H 2 O 6 3 + Contains Fe 3 + : Ar 3 d 5 : t 2 g 3 e g 2 Ni H 2 O 6 2 + Contains Ni 2 + : Ar 3 d 8 : t 2 g 6 e g 2 V H 2 O 6 3 + Contains V 3 + : Ar 3 d 2 : t 2