Some chemical reactants are listed in the table below. Complete the table by filling in the oxidation state of the highilghted atom. \begin{tabular}{|c|c|} \hline species & oxidationstateofhightightedatom \\ \hline Br2(0) & \\ \hline H2O(l) & \\ \hline CuCl(s) & \\ \hline NH3(g) & \\ \hline & \\ \hline \end{tabular}