Question

an element X combines with oxygen to form oxide x2o when X2O is added to water, it turns red litmus paper blue. Is X a metal or non metal? Give reasons to support your answer.​

Answer 1

Answer:

Since the element X when combines with oxygen litmus turns blue which indicate that the oxide of given element is a base. Since metallic oxides are basic in nature element 'X' is a metal.

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Answer 2

Answer:

An element Mg combines with oxygen to form oxide Mgo, when Mgo's ashes will added with Ho2, the litmus paper will turns red in color.

It is a metal because the metal produce red litmus paper from blue. That's mean it is metallic hydroxide.