Question: how many donor atoms are present in the ligand ethylenediamine (h2nch2ch2nh2)?
Answer: Because bidentate and polydentate ligands grasp the metal between two or more donor atoms and are called chelating agents. Example: ethylenediamine (H2NCH2CH2NH2) • The abbreviation for ethylenediamine is “en.” • There are two nitrogen atoms that can act as ligands.