JEE Main202315 Apr 2023Morning ShiftChemistryCoordination CompoundsActual
The complex with highest magnitude of crystal field splitting energy ∆ 0 is
Options
- ATi OH 2 6 3 +
- BCr OH 2 6 3 +
- CMn OH 2 6 3 +
- DFe OH 2 6 3 +
Correct answer
B. Cr OH 2 6 3 +
Step-by-step solution
Crystal field stabilisation energy of the complex can be calculated as follows, CFSE = number   of   t 2 g   electrons × - 0 . 4 + number   of   e g   electrons × 0 . 6 Complex CFSE Ti OH 2 6 3 + t 2 g 1 e g 0 – 0 . 4   ∆ 0 Cr H 2 O 6 3 + t 2 g 3 e g 0 – 1 . 2   ∆ 0 Mn H 2 O 6 3 + t 2 g 3 e g 1 – 0 . 6   ∆ 0 Fe H 2 O 6 3 + t 2 g 3 e g 2 0