Below are the condensed molecular structures of two compounds that each contain

Question

Below are the condensed molecular structures of two compounds that each contain two NH2 groups. The one on the left is ethylenediamine, a bidentate ligand. Choose the answer that best explains why the chelating ability of these two molecules would be the same, or different. The ligands have the same chelating ability, because they each have two identical NH2 groups. The ligands have the same chelating ability because they have identical overall structures: two amine groups with a nonpolar hydrocarbon bridge. The ligands would have a different chelating ability because the structure on the right would be highly strained in the bidentate configuration. The ligands would have a different chelating ability because the proximity of the second amine in the structure on the right creates a more polar NH2 group. It is impossible to say without further information.

Explanation / Answer

The ligands would have a different chelating ability because on the stucture on the right would be highly strained in bidentate configuration.

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