PLEASE HELP : Craft the correct formulas of the following pairings using correct oxidation numbers (from round 1). Remember that metals always go first and polyatomic ions go in parenthesis

Compounds provided below
[tex]\\ \tt\hookrightarrow Al(OH)_3[/tex]
[tex]\\ \tt\hookrightarrow KCl[/tex]
[tex]\\ \tt\hookrightarrow Ag_2S[/tex] (AgS also possible but unstable)
[tex]\\ \tt\hookrightarrow Ca(CH_3COO)_2[/tex]
[tex]\\ \tt\hookrightarrow (NH_4)_2CO_3[/tex]
[tex]\\ \tt\hookrightarrow Fe(PO_4)_2[/tex]
[tex]\\ \tt\hookrightarrow Na_2O[/tex]
[tex]\\ \tt\hookrightarrow Pb(CrO_7)_4[/tex]