Question:medium

In which of the following, the compounds are correctly arranged in the decreasing order of boiling points?

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When comparing boiling points of substances with hydrogen bonds (\(H_2O, HF, NH_3\)), remember the order is \(H_2O>HF>NH_3\). Water is highest due to the extensive 3D network of H-bonds it can form. Any comparable molecule without H-bonding (like \(PH_3\)) will have a significantly lower boiling point.

Updated On: Mar 30, 2026

\( \text{HF}>\text{H}_2\text{O}>\text{NH}_3>\text{PH}_3 \)
\( \text{H}_2\text{O}>\text{HF}>\text{NH}_3>\text{PH}_3 \)
\( \text{H}_2\text{O}>\text{HF}>\text{PH}_3>\text{NH}_3 \)
\( \text{HF}>\text{NH}_3>\text{H}_2\text{O}>\text{PH}_3 \)

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The Correct Option is B

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