Ethylenediaminetetraacetic acid (EDTA) is the | vedclass

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(C) $EDTA$ is a hexadentate ligand that forms stable water-soluble complexes with metal ions. In the treatment of lead poisoning,it is administered as

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Calcium disodium salt

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(C) $EDTA$ is a hexadentate ligand that forms stable water-soluble complexes with metal ions. In the treatment of lead poisoning,it is administered as the $Calcium$ $disodium$ salt of $EDTA$ $(CaNa_2EDTA)$. This is because if the free acid or other salts were used,they might deplete the body's essential calcium levels,leading to hypocalcemia. The $Ca^{2+}$ ions in the complex are exchanged for $Pb^{2+}$ ions in the body,forming a stable,water-soluble lead-$EDTA$ complex that is excreted through urine.

List-$I$ (Compound)	List-$II$ (Colour)
$A$. $Fe_4[Fe(CN)_6]_3 \cdot xH_2O$	$I$. Violet
$B$. $[Fe(CN)_5NOS]^{4-}$	$II$. Blood Red
$C$. $[Fe(SCN)]^{2+}$	$III$. Prussian Blue
$D$. $(NH_4)_3PO_4 \cdot 12MoO_3$	$IV$. Yellow

Ethylenediaminetetraacetic acid $(EDTA)$ is the antidote for lead poisoning. It is administered in the form of

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