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प्रश्न
An element A forms an oxide A2O5.
What is the valency of element A ?
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उत्तर
Element A forms an oxide A2O5. Crossing the valencies, we can see that the valency of O (oxide) is −2 and that of element A is 5.
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संबंधित प्रश्न
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Al2(SO4)3
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Baking powder
State the term.
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H2X, CX2, XO2, XO3
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Give a reason why –
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State the atomicity of the following:
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Write any two classifications of a molecule.
