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The P-Block Elements

Question

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Give two important uses of Selenium.

Solution

(i) In photocopier machines as photo– conductor.
(ii) As the decolouriser of glass.

Some More Questions From The p-Block Elements Chapter

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?

Which of the following does not react with oxygen directly?
Zn, Ti, Pt, Fe

Complete the following reactions
(i) C₂H₄ + O₂→
(ii) 4Al + 3O₂→

Why does O₃ act as a powerful oxidising agent?

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