Question:
Which of the following is not correct?
Which of the following is not correct?
Show Hint
Water has an unusually high boiling point due to hydrogen bonding, breaking the expected group 16 trend.
Updated On: Jun 5, 2025
- Thermal stability: \( H_2O>H_2S>H_2Se>H_2Te>H_2Po \)
- Reducing property: \( H_2S>H_2Se>H_2Te>H_2Po \)
- Boiling point: \( H_2S<H_2Se<H_2Te<H_2O \)
- Melting point: \( H_2S<H_2Se<H_2Te<H_2O \)
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding Boiling Point Trends
For group 16 hydrides, boiling points increase down the group due to increasing molecular mass, except for water (\( H_2O \)), which exhibits strong hydrogen bonding.
Step 2: Expected Boiling Point Order
- Water has an exceptionally high boiling point due to hydrogen bonding.
- The correct trend is:
\[
H_2O>H_2Te>H_2Se>H_2S
\]
Since option (C) incorrectly places \( H_2O \) last, it is incorrect.
Conclusion
Thus, the correct answer is:
\[
\text{Boiling point: } H_2S<H_2Se<H_2Te<H_2O
\]
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