Question
According to crystal field theory, the correct order of ligands with respect to their decreasing order of field strength is
NEET
Chemistry
Coordination Compounds
2026
NEET 2026 (Re-NEET)
NEET Chemistry Question (2026) — Solution
Options
- A. Cl ^-> NH _3> H _2 O > CO
- B. CO > NH _3> H _2 O > Cl ^-
- C. CO > H _2 O > NH _3> Cl ^-
- D. Cl ^-> H _2 O > NH _3> CO
Answer
B. CO > NH _3> H _2 O > Cl ^-
Step-by-step solution
According to the spectrochemical series, the arrangement of ligands in the increasing order of their crystal field splitting energy (CFSE) or field strength is: I ^- From the given ligands, the decreasing order of field strength is: CO > NH _3 > H _2 O > Cl ^- Answer: CO > NH _3> H _2 O > Cl ^-
Related: Chemistry — Coordination Compounds · All PYQ Banks