question_answer 53)

    A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent? (a) Thiosulphato     (b) Qxalato (c) Glycinato           (d) Ethane-1, 2-diamine

Answer:

                    (a) A chelating ligand has two or more binding donor atoms to a single metal ion e.g.          Here (¬) denotes binding site.                                               thiosulphato ( is not a chelating ligand because geometrically it is                            not favourable for  to chelate a metal ion.