Question

How Many Coordinate Bonds Does $\mathrm{EDTA}$ Form?

Answer 1

The number of coordinate bonds formed by EDTA:

• The formula for $\mathrm{EDTA}$ is $[C{H}_{2}N(C{H}_{2}C{O}_{2}H{)}_2{]}_2$, it contains two amines and four carboxylates in its structure.
• It is a hexadentate chelating agent and the amines and carboxylate group can help them to attach the metal ion.

Thus, its coordination number is $6$ and can form six-coordinate bonds.