Question

The increasing order of the crystal field splitting power of some common ligands is
A. `NH_(3) lt Cl^(-) lt CN^(-) lt F^(-) lt CO lt H_(2)O`
B. `F^(-) lt Cl^(-) lt NH_(3) lt CN^(-) lt H_(2)O lt CO`
C. `Cl^(-) lt F^(-) lt H_(2)O lt NH_(3) lt CN^(-) lt CO`
D. `CO lt CN^(-) lt NH_(3) lt H_(2)O lt F^(-) lt Cl^(-)`

Answer 1

Correct Answer - C
In general , the ligands can be arranged in a series in the order of increasing field strength as `I^(-) lt Br^(-) lt SCN^(-) lt Cl^(-) lt S^(2-) lt F^(-) lt OH^(-) lt C_(2)O_(4)^(2-) lt H_(2)O lt NCS^(-) lt EDTA^(4-) lt NH_(3) lt en lt NO_(2)^(-) lt CN^(-) lt CO`