Chemistry - Complete s-block Question with Solution | TestHub

The alkali metals react with${\mathrm{H}}_2\mathrm{O}$to form MOH and${\mathrm{H}}_2\left(\mathrm{g}\right)$is evolved.
$\mathrm{M}+\mathrm{H}\mathrm{O}\mathrm{H}\to \mathrm{M}\mathrm{O}\mathrm{H}+\frac{1}{2}{\mathrm{H}}_2\left(\mathrm{g}\right)$
The reactivity with water increases in the order
Li < Na < K < Rb < Cs