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The p-Block Elements
Question
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Phosphine has a lower boiling point than ammonia. Give a reason.

Answer

PH3 has a lower boiling point than ammonia due to its inability to assorted via intermolecular hydrogn bonding. This is because phosphorus is bigger have bigger size as compare to nitrogen thus have weak bonding with hydrogen.

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Some More Questions From The p-Block Elements Chapter

Why is N2 less reactive at room temperature?

Mention the conditions required to maximise the yield of ammonia.

What is the covalency of nitrogen in N2O5?

Bond angle in PH4+ is higher than that in PH3. Why?

Write a balanced equation for the hydrolytic reactions PCl5 in heavy water.

What is the basicity of H3PO4?

What happens when H3PO3 is heated?