Element X is an metal with a valency 2. Element Y is a non-metal with a valency 3. (a) Write equations to show how x and y form ions?
Element X is an metal with a valency 2. Element Y is a non-metal with a valency 3.
(a) Write equations to show how x and y form ions?
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound,
(c) Write two applications of electrolysis in which the anode diminishes in mass,
(d) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the ………….. and Y at the ……………….. of the electrolytic cell.
(Provide the missing words
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(a) X ---------> X2+ + 2e- , Y + 3e --------> Y3-
(b) Y2 + 3X ----------> X3Y2
(c)(i) It is used for the electroplating of metals.
(ii) It is also used in purification of metals.
(d) Cathode, Anode
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