The formula of the chloride of the metal 'M' is MCl₃. State the formula of its:

(i) Carbonate

(ii) Hydroxide

(i) Formula of metal carbonate

$\text{M}^{3+} \phantom{\nearrow} \text{CO}${3}^{2-} \\[0.5em] \overset{\phantom{3}{3}}{\text{M}} \space {\searrow}\mathllap{\swarrow} \space \overset{2}{\text{C}}\text{O}{3} \Rightarrow \underset{\phantom{2}{2}}{\text{M}} \space {\searrow}\mathllap{\swarrow} \space \underset{3}{\text{C}}\text{O}_{3} \\[0.5em]

So, we get the formula as $\bold{M}${\bold{2}}\bold{(CO{\bold{3}}})_{\bold{3}}

(ii) Formula of metal hydroxide

$\text{M}^{3+} \phantom{\nearrow} \text{OH}^{1-} \\[0.5em] \overset{\phantom{3}{3}}{\text{M}} \space {\searrow}\mathllap{\swarrow} \space \overset{1}{\text{OH}} \Rightarrow \underset{\phantom{2}{1}}{\text{M}} \space {\searrow}\mathllap{\swarrow} \space \underset{3}{\text{OH}} \\[0.5em]$

So, we get the formula as $\bold{M}\bold{(OH)}_{\bold{3}}$