If a compound formed between metallic element $X$ and non-metallic element $Y$ , is melted and an electric current is passed through the molten compound, the element $X$ will be obtained at and the $Y$ at theand the Y at the_ .

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Solution

Let the compound X with valency $2$
and compound Y with valency $3$
When a molten substance is electrolyzed,
At anode: oxidation happens $Y^{- 3} \to Y + 3 e^{-}$
At cathode: reduction happens $X^{+ 2} + 2 e^{-} \to X$
The element $X$ will be obtained at the cathode and the element $Y$ obtained at anode.

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