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The P-Block Elements
Question
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
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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Mock Test Series
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