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20. Ethylenediaminetetraacetic acid (EDTA) is:
(A) not useful as a chelating agent.
(B) an effective antidote for heavy metal poisoning (e.g. Pb2- and Hg2- ).
(C) a monodentate ligand.
(D) known to form unstable complex ions with Fe3-. Hg2-, and Zn2-,
(E) known to form complexes with platinums that inhibit the growth of cancerous cells.



20. Ethylenediaminetetraacetic acid (EDT..-阿摩線上測驗