Question:
Which of the following oxides is NOT volatile?
Which of the following oxides is NOT volatile?
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Ionic oxides generally have high melting points and low volatility.
Updated On: Jan 26, 2026
- \(\text{As}_2\text{O}_3\)
- \(\text{ZnO}\)
- \(\text{P}_2\text{O}_5\)
- \(\text{SO}_2\)
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The Correct Option is B
Solution and Explanation
Step 1: Understand volatility.
Volatile oxides easily vaporise on heating and are usually covalent in nature.
Step 2: Analyze the oxides.
\(\text{As}_2\text{O}_3\), \(\text{P}_2\text{O}_5\), and \(\text{SO}_2\) are covalent oxides and volatile.
Step 3: Identify the exception.
\(\text{ZnO}\) is an ionic oxide with high lattice energy and is non-volatile.
Step 4: Conclusion.
Therefore, zinc oxide is not volatile.
Volatile oxides easily vaporise on heating and are usually covalent in nature.
Step 2: Analyze the oxides.
\(\text{As}_2\text{O}_3\), \(\text{P}_2\text{O}_5\), and \(\text{SO}_2\) are covalent oxides and volatile.
Step 3: Identify the exception.
\(\text{ZnO}\) is an ionic oxide with high lattice energy and is non-volatile.
Step 4: Conclusion.
Therefore, zinc oxide is not volatile.
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