Chemistry - Complete s-block Question with Solution | TestHub

On moving down the group thermal stability of alkali metal carbonate increases so$\mathrm{C}{\mathrm{s}}_2\mathrm{C}{\mathrm{O}}_3$is most stable here.
$\mathrm{C}{\mathrm{s}}_2\mathrm{C}{\mathrm{O}}_3>\mathrm{R}{\mathrm{b}}_2\mathrm{C}{\mathrm{O}}_3>{\mathrm{K}}_2\mathrm{C}{\mathrm{O}}_3>\mathrm{N}{\mathrm{a}}_2\mathrm{C}{\mathrm{O}}_3$