Chemistry - Complete s-block Question with Solution | TestHub

A metal$\mathrm{M}$readily forms its sulphate$\mathrm{M}\mathrm{S}{\mathrm{O}}_4$which is water-soluble. It forms its oxide$\mathrm{M}\mathrm{O}$which becomes inert on heating. It forms its insoluble hydroxide$\mathrm{M}(\mathrm{O}\mathrm{H}{)}_2$which is soluble in$\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$solution. Then$\mathrm{M}$is