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An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
Answers (1)
Oxides of non-metals are acidic in nature
Oxides of metals are basic in nature
Given that the element A forms an acidic oxide, therefore, A is a non-metal.
Also, it forms an oxide A2O3 so it should have 3 valence electrons, i.e., +3 charge,
Therefore, electronic configuration is 2, 3
Hence, A is boron and its oxide is B2O3.
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