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JEE MainChemistrys Block Elements

Consider the following list of oxides: Na₂O , Tl₂O , B₂O₃ , Al₂O₃ , CO , NO , N₂O , Cl₂O₇ , ZnO The number of neutral, amphoteric, and acidic oxides in the given list respectively are:

Options

  1. A3, 3, 1
  2. B2, 2, 3
  3. C3, 1, 3
  4. D3, 2, 2

Correct answer

D. 3, 2, 2

Step-by-step solution

Let us classify each oxide in the given list: 1. Na₂O : Alkali metal oxide Basic 2. Tl₂O : Lower oxidation state metal oxide of group 13 Basic 3. B₂O₃ : Non-metal/metalloid oxide Acidic 4. Al₂O₃ : Metal oxide Amphoteric 5. CO : Non-metal oxide Neutral 6. NO : Non-metal oxide Neutral 7. N₂O : Non-metal oxide Neutral 8. Cl₂O₇ : Non-metal oxide in high oxidation state Acidic 9. ZnO : Metal oxide Amphoteric Counting the categories: Neutral oxides ( CO , NO , N₂O ) = 3 Amphoteric oxides ( Al₂O₃ , ZnO ) = 2 Acidic oxides

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