${\mathrm{LiHCO}}_3$ does not exist in solid state.

Find $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following reactions:

${\mathrm{NH}}_3+\mathrm{A}+{\mathrm{CO}}_2\to {\left({\mathrm{NH}}_4\right)}_2{\mathrm{CO}}_3$

${\left({\mathrm{NH}}_4\right)}_2{\mathrm{CO}}_3+{\mathrm{H}}_2\mathrm{O}+\mathrm{B}\to {\mathrm{NH}}_4{\mathrm{HCO}}_3$

${\mathrm{NH}}_4{\mathrm{HCO}}_3+\mathrm{NaCl}\to {\mathrm{NH}}_4\mathrm{Cl}+\mathrm{C}$

Identify the ions which form hydrated chlorides from the following:

$\mathrm{a})$ ${\mathrm{Ba}}^{2+}$
$\mathrm{b})$ ${\mathrm{Li}}^{+}$
$\mathrm{c})$ ${\mathrm{Sr}}^{2+}$
$\mathrm{d})$ ${\mathrm{Cs}}^{+}$
$\mathrm{e})$ ${\mathrm{Mg}}^{2+}$
$\mathrm{f})$ ${\mathrm{Rb}}^{+}$
$\mathrm{g})$ ${\mathrm{Ca}}^{2+}$

Products $(\mathrm{X}$ and $\mathrm{Y})$ of the following reactions (I and II) are :
I. $\underset{(\mathrm{Cold} \mathrm{and} \mathrm{dil}.)}{2\mathrm{NaOH}}+{\mathrm{Cl}}_2⟶\mathrm{NaCl}+\mathrm{X}+{\mathrm{H}}_2\mathrm{O}$

II. $\underset{(\mathrm{Hot} \mathrm{and} \mathrm{conc}.)}{6\mathrm{NaOH}}+3{\mathrm{Cl}}_2⟶\mathrm{NaCl}+\mathrm{Y}+3{\mathrm{H}}_2\mathrm{O}$

Match List-$\mathrm{I}$ with List-$\mathrm{II}$

Choose the correct answer from the options given below:

Given below are two statements: One is labelled as Assertion $\mathrm{A}$ and the other labelled as Reason $\mathrm{R}.$
Assertion $\mathrm{A}$ : Lithium halides are some what covalent in nature.

Reason $\mathrm{R}$ : Lithium possess high polarisation capability.

In the light of the above statements, choose the most appropriate answer from the options given below: