Question

Give the order of chelating effect of following ligands.
(i) `C_(2)O_(4)^(2-)` (ii) EDTA (iii) dien
A. `iii gt ii gt i`
B. `i gt ii gt iii `
C. `ii gt iii gt i`
D. `igt iii gt ii `

Answer 1

Correct Answer - C
As number of donor atoms increases the number of bonds increases. So the chelating effect of ligands increase as oxalato, dien and EDTA has two, three and six donor atoms respectively.