The p-Block Elements

Question

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Assign a reason for the following statement:
Phosphorus (P₄) is more reactive than nitrogen (N₂).

Answer

Nitrogen molecule is a diatomic and the two nitrogen atoms are linked by a triple bond (N≡ N) forming (pi-pi) bond. As the bond dissociation energy is very high (946 kj mol^–1), it is not possible to cleave the triple bond so easily. Therefore, phosphorus (P₄) is more reactive than nitrogen (N₂).

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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.

What is the basicity of H₃PO₄?

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.

Why is H₂O a liquid and H₂S a gas?

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