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The p-Block Elements
Question
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What is the basicity of H3PO3?

Answer

H3PO3 ionises to give two H+ ions. Thus, it is dibasic in nature.
H3PO3 --> 2H+ + HPO2-3

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Some More Questions From The p-Block Elements Chapter

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.

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What happens when H3PO3 is heated?

List the important source of sulphur.

Write the order of thermal stability of the hydrides of Group 16 elements.