Chemistry - Complete s-block Question with Solution | TestHub

Barium bicarbonate, $\mathrm{Ba}(\mathrm{HC}{\mathrm{O}}_3{)}_2$, does not exist as a stable solid. It only exists in aqueous solution. The other options, sodium bicarbonate ($\mathrm{NaHC}{\mathrm{O}}_3$), potassium bicarbonate ($\mathrm{KHC}{\mathrm{O}}_3$), and rubidium bicarbonate ($\mathrm{RbHC}{\mathrm{O}}_3$), are stable solids.