Thermal decomposition of lithium nitrate gives:

Match the following:

Compound	Uses
$1$. Soda ash	$a$. In purification of sugar
$2$. Calcium oxide	$b$. As an antacid
$3$. Baking soda	$c$. In paper and textile industries
	$d$. To prepare pure fats and oils

Which of the following salts will produce a green flame on a $Pt$ wire?

The electronic configuration of $Cs$ is

Which one of the following nitrates will decompose to give $NO_2$ on heating?

Metals dissolve in liquid ammonia giving coloured solutions which are conducting in nature. The colour of the solution and reason of its conductance is