Alkali metals in each period have

When sodium is heated at $300\,^oC$,it forms $X$. It absorbs $CO_2$ to form $Na_2CO_3$ and $Y$. What is $Y$?

Assertion $(A): K, Rb$ and $Cs$ form superoxides. \\ Reason $(R):$ The stability of superoxides increases from $K$ to $Cs$ due to decrease in lattice energy.

Discuss the various reactions that occur in the Solvay process.

What is obtained by the electrolysis of carnallite?

Hydroxide of which alkali metal is used in the manufacture of soft soap?