Bickeldefines the political question doctrine, in the passage quoted in sec-tion I, in terms of the Court's sense of unease at straying into thedecision of difficult and delicate questions involving the separationof powers and requiring political expertise or sensitivity to makean intelligent decision.
A chelate is a chemical compound composed of a metal ion and a chelating agent. A chelating agent is a substance whose molecules can form several bonds to a single metal ion. In other words, a chelating agent is a multidentate ligand. An example of a simple chelating agent is ethylenediamine.ethylenediamine. A single molecule of ethylenediamine can form two bonds to a transition-metal ion such as nickel(II), Ni 2+ .n other words, a chelating agent is a multidentate ligand. An example of a simple chelating agent is ethylenediamine. ethylenediamine. A single molecule of ethylenediamine can form two bonds to a transition-metal ion such as nickel(II), Ni 2+ .
Chelation is a chemical process in which a substance is used to bind molecules, such as metals or minerals, and hold them tightly so that they can be removed from a system, such as the body. In medicine, chelation has been scientifically proven to rid the body of excess or toxic metals.he EDTA chelation therapy or placebo solution was delivered through 40 intravenous infusions that were administered over a 28-month course of treatment. The first 30 infusions were delivered on a weekly basis and the last 10 were delivered every two to eight weeks.