Name the following compound:

$\left[\mathrm{Ni}{\left(\mathrm{dmg}\right)}_2\right]$, Rosy red precipitate is obtained in the detection of ${\mathrm{Ni}}^{2+}$ ions.

Name the following compound:

${\mathrm{K}}_2\left[{\mathrm{PtCl}}_6\right]$, Yellow precipitate is obtained in the detection of potassium ions.

Name the following compound:

${\mathrm{Na}}_2\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_5{\mathrm{NO}}^{+}\right]$, Sodium nitroprusside is used for the detection of sulphide ions/sulphur.

Name the following compound:

$\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_5\left({\mathrm{NO}}^{+}\right)\right]{\mathrm{SO}}_4$, Brown ring complex is obtained in the detection of ${\mathrm{Fe}}^{2+}$ ions.

Name the following compound:

${\left[\mathrm{Cu}{\left(\mathrm{CN}\right)}_4\right]}^{3-}$, Colourless stable soluble complex is obtained in the detection of ${\mathrm{Cu}}^{2+}$ on adding an excess of $\mathrm{KCN}$ solution.

Name the following compound:

${\left({\mathrm{NH}}_4\right)}_2\left[{\mathrm{PtCl}}_6\right]$, only few compounds of ammonium ions are precipitated and this is one of these, a yellow precipitate.

Name the following compound:

${\left[CoBr{\left(\mathrm{en}\right)}_2\left(\mathrm{ONO}\right)\right]}^{+}$

Name the following compound:

$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]\left[\mathrm{Co}{\left(\mathrm{ONO}\right)}_6\right]$

Name the following compound:

$\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{CO}}_3\right)\right]\mathrm{Cl}$