Question

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature. Element X must be

Answer 1

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Answer 2

Element X must be Nitrogen (N).

• Nitrogen is a non-metallic element in nature.

• Nitrogen at room temperature exists as a diatomic gas that is N₂.

• The valency of N is 3 and that of Aluminium (Al) is also equal to 3. Both Al and N combine to form AlN (Aluminum Nitride). In the compound, Al has an oxidation state of 3+ and N has an oxidation state of 3-.
• The aluminum nitride formed will be ionic in nature as it is formed by the combination of a metal and a non-metal.

Hence it is confirmed that the element X must be Nitrogen (N).

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