The active substance in Nessler's reagent used for the detection of ammonia is ..........

Which from the following is a correct stability order of complexes formed by metal ions if the ligand remains the same?

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:

$Ni^{2+}$ ion can be estimated by using dimethyl glyoxime and forms a cherry-red precipitate. The complex is stabilized by

Which complex is most stable? Where $k_d =$ Dissociation constant.

Low oxidation states of metals in their complexes are common when ligands: