$Na$ imparts yellow colour to Bunsen flame because of

In what ways does lithium show similarities to magnesium in its chemical behaviour?

$A$ compound $(M_2O_2)$ of group $I$ element $(M)$ hydrolyses to form $M^{+}$,$OH^{-}$ and $X$. Another compound $(M'O_2)$ of group $I$ element $(M')$ hydrolyses to form $(M')^{+}$,$OH^{-}$,$X$ and $Y$. What are $X$ and $Y$ respectively?

Give any two uses of washing soda.

What is obtained when sodium metal is heated in a stream of dry ammonia?

Identify the element that forms amphoteric oxide: