Acidic And Basic Oxides
In period 3, nature of highest oxides changes from Na2O to Cl2O7 as:
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About This Question
- Subject
- chemistry
- Chapter
- classification of elements and periodicity in properties
- Topic
- acidic and basic oxides
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Strongly basic to strongly acidic
Left-side period-3 metals like Na form ionic basic oxides (Na2O), while nonmetals on the right form covalent acidic oxides (such as Cl2O7, an anhydride of a strong acid). This reflects decreasing metallic and increasing nonmetallic character across the period. Thus oxide character shifts from basic to acidic.
This hard difficulty chemistry question is from the chapter classification of elements and periodicity in properties, covering the topic of acidic and basic oxides. It appeared in the 2025 exam.
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