Cobalt(III) forms an octahedral complex ion G\textbf{G}G, which contains both ammonia (NH3\text{NH}_3NH3) and chloride (Cl−\text{Cl}^-Cl−) ligands.
Complex ion G\textbf{G}G has a molar mass of 197.9 g mol−1197.9\text{ g mol}^{-1}197.9 g mol−1.
Determine the formula and charge of complex ion G\textbf{G}G.