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Physical Properties of Boron Family

A Compound XH...

Question

A Compound XH is formed by combination of an element X with hydrogen. Find the valency of element X. State the formula of the compounds formed by combination of X with :
(a)Nitrogen (b) Oxygen

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Solution

The given formula is XH which means the oxidation state of X is +1 and H is -1. Hence valency of both atoms is 1.
Since the valency of Nitrogen is 3 and Oxygen is 2, therefore when Nitrogen combines with hydrogen it will form X₃N and when oxygen combines with X, the compound formed is X₂O.

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