Question

Which of the following ligands is expected to be bidentate?

• A. $C{H}_{3}N{H}_2$
• B. $C{H}_{3}C\equiv N$
• C. $Br$
• D. $C_2{O}_4^2$

Answer 1

Answer: (D)

$C_2{O}_4^{2-}$ is a bidentate ligand because it has two donor atoms (sites) and can coordinate to the central ion at two positions.