Give reasons:
Thermal stability decreases from H₂O to H₂Te.

Solution

The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H₂O > H₂S > H₂Se > H₂Te > H₂Po. This is because M-H bond dissociation energy decreases down the group with the increase in the size of a central atom.

Some More Questions From The p-Block Elements Chapter

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The P-Block Elements

Give reasons:
Thermal stability decreases from H₂O to H₂Te.

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.

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The P-Block Elements

Give reasons:Thermal stability decreases from H2O to H2Te.

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.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Give reasons:
Thermal stability decreases from H₂O to H₂Te.

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?