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and : A/20 , + 2 NaOH + 3H(20 - EN- 2.6.2 A Period 3 element, X, has no reaction with oxygen, but it reacts with water to form an acidic solution. In contrast, another element, Y, in Period 3 of the Periodic Table, does not react with water, but reacts with excess oxygen to form the oxide, Y4010. Ar P (a) Name the elements X and Y. ( b ) Write equations for the reactions that occur