
Explain why the alkali metals have low densities, are electrically conducting, good reducing agents, form monovalent ions, soluble salts and soluble hydroxides, which become stronger alkalis on descending the group.

Important Questions on s-Block Elements:Alkali and Alkaline Earth Metals. Alkali Metals:(Group 1)
Why are potassium and caesium, rather than lithium, used in photoelectric cells?

List some important ores of sodium?

Write the preparation and uses of potassium chlorate.

Describe two methods for the preparation of potassium cyanide. What are its uses?

Explain the following: Sodium metal cannot be obtained by the electrolysis of aqueous sodium chloride solution.

Explain the following: The ionization energy decreases from lithium to caesium.

Explain the following: Alkali metals are difficult to reduce.

Explain the following: The elements of Group are called alkali metals.
