1.

Upon treatment with ammonical H_(2)S, the metal ion that precipitates as a sulfide is

Answer»

Fe(III)
Al(III)
Mg(II)
ZN(II)

Solution :Ammonical `H_(2)S` is GROUP REAGENT of fourth group cationic radicals. `Fe^(3+)&Al^(3+)` will precipitate `Fe(OH)_(3)` and `Al(OH)_(3)` respectively.only zinc will form white precipitate of ZnS.


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