NEET2020ChemistryCoordination CompoundsActual
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
Options
- ASCN − < F − < CN − < C 2 O 4 2 −
- BF − < SCN − < C 2 O 4 2 − < CN −
- CCN − < C 2 O 4 2 − < SCN − < F −
- DSCN − < F − < C 2 O 4 2 − < CN −
Correct answer
D. SCN − < F − < C 2 O 4 2 − < CN −
Step-by-step solution
( aligned & I ⁻< Br ⁻< S ²⁻< SCN ⁻( S - bonded )< Cl ⁻< NO ₃⁻< N ₃⁻< F ⁻< OH ⁻< C ₂ O ₄ ²⁻< H ₂ O < NCS ⁻( N - bonded )< & CH ₃ CN < py (pyridine) < NH ₃< en (ethylenediamine) < bipy (2,2^ -bipyridine) < phen (1,10-phenanthroline) . & < NO ₂⁻ ( N -bonded) < PPh ₃ (Triphenylphosphine) < CN ⁻< CO . aligned )