Sketch the structure of the complex in each of the following compounds and give the full compound name: (a) \(\operatorname{cis}-\left[\operatorname{Co}\left(\mathrm{NH}_{3}\right)_{4}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]\left(\mathrm{NO}_{3}\right)_{2}\) (b) \(\mathrm{Na}_{2}\left[\mathrm{Ru}\left(\mathrm{H}_{2} \mathrm{O}\right) \mathrm{Cl}_{5}\right]\) (c) \(\operatorname{trans} \mathrm{NH}_{4}\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]\) (d) \(\operatorname{cis}-\left[\operatorname{Ru}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]\)

The structures and full compound names are as follows: (a) cis-tetraamminediaquacobalt(III) nitrate: Cobalt (Co) central atom with four ammonia (NH3) and two water (H2O) ligands in a cis configuration. Two nitrate (NO3) ions are also present. (b) sodium hexaaqua(pentachloro)ruthenate(III): Ruthenium (Ru) central atom with one water (H2O) molecule and five chloride (Cl) ions in an octahedral arrangement. (c) trans-diaquabis(oxalato)cobalt(III) ammonium: Cobalt (Co) central atom with two oxalate (C2O4) ions and two water (H2O) molecules in a trans configuration. (d) cis-dichlorobis(ethylenediamine)ruthenium(III): Ruthenium (Ru) central atom with two ethylenediamine (en) molecules and two chloride (Cl) ions in a cis configuration.