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AP EAMCET201920 Apr 2019Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Identify the set of acidic oxides.

Options

  1. A( Na ₂ O , CaO , BaO )
  2. B( ZnO , PbO , BeO )
  3. C( CO , NO , N ₂ O )
  4. D( Mn ₂ O ₇, CrO ₃, ~V ₂ O ₅ )

Correct answer

D. ( Mn ₂ O ₇, CrO ₃, ~V ₂ O ₅ )

Step-by-step solution

Acidic oxides ( Mn ₂ O ₇, CrO ₃, ~V ₂ O ₅ ) (due to higher oxidation state of central metal) Basic oxide ( Na ₂ O , CaO , BaO ) (due to lower oxidation state of central metal) Alkaline and alkali metal oxide are always basic. Neutral oxides ( CO , NO , N ₂ O ) Amphoteric oxides ( ZnO , PbO , BeO ) (acidic as well as basic) Hence, option (4) is correct.

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