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The p-Block Elements
Question
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On being slowly passed through water PH3 forms bubbles but NH3 dissolves. Why is it so?

Answer

N-H bond is more polar than P-H. NH3 dissolves in water due to its ability to form hydrogen bonds with water while PH3 can not form hydrogn bonds and is insoluble in water.

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Some More Questions From The p-Block Elements Chapter

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?

List the important source of sulphur.