The solubility of silver bromide in hypo solution is due to the formation of

Which of the following complexes represents maximum stability?

$K_4[Fe(CN)_6]$ reacts with ozone to give:

The solubility of $AgCl$ in $NH_4OH$ is due to the formation of:

Choose the correct statements from the following:
$A$. Ethane$-1, 2-$diamine is a chelating ligand.
$B$. Metallic aluminium is produced by electrolysis of aluminium oxide in the presence of cryolite.
$C$. Cyanide ion is used as a ligand for the leaching of silver.
$D$. Phosphine acts as a ligand in Wilkinson's catalyst.
$E$. The stability constants of $Ca^{2+}$ and $Mg^{2+}$ are similar with $EDTA$ complexes.
Choose the correct answer from the options given below:

Solubility of iodine in water is greatly increased by the addition of iodide ions because of the formation of ......