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The P-Block Elements
Question
Arrange the following in the decreasing order of their reducing character:
HF, HCl, HBr, HI
Solution
Reducing character depends on the ease of release of H. Down the group, atomic size of halogen increases, bond length increases, bond strength decreases, thus it becomes easier to release H. So, the correct order of reducing character is:
HF<HCl<HBr<HI
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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?
Mock Test Series
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