• # question_answer 9) Are the oxidation state and covalency of $Al$ in ${{\left[ AlCl{{({{H}_{2}}O)}_{5}} \right]}^{2+}}$ same?

Let oxidation state of $\text{Al}$ is x i.e., ${{[AlCl{{({{H}_{2}}O)}_{5}}]}^{2+}}$ or $x+1+5\times 0=+2$ so, $x=+3$ It is a complex compound in which coordinate covalency of $\text{Al}$ is '6.