Among alkali metals,which element do you expect to be least electronegative and why?

Magnesium is burnt in the air to form $A$ and $B$. When $B$ is hydrolyzed,$C$ and $D$ are formed. $D$ is the reactant in the manufacture of nitric acid by Ostwald's process. What is $C$?

The ionic mobility of alkali metal ions in aqueous solution is maximum for

Why are alkali metals not found in nature?

$A$ metal $X$ on heating in nitrogen gas gives $Y$. $Y$ on reaction with ${H_2}O$ produces a colourless gas. When this gas is passed through $CuSO_4$ solution,it gives a blue colour. What is $Y$?

Which compounds are found as impurities in impure sodium chloride?