$$\mathrm{LiF}$$ and $$\mathrm{Li}_3 \mathrm{~N}$$ are thermally stable compounds.

n the vapour phase $$\mathrm{BeCl}_2$$ has a polymeric chain structure consisting of numerous $$\mathrm{BeCl}_2$$ units.

Alkali and Alkaline earth metals cannot be produced by chemical reduction methods.

When equimolar aqueous solutions of $$\mathrm{SrCl}_2, \mathrm{MgCl}_2$$ and $$\mathrm{BaCl}_2$$ are taken and their $$\mathrm{pH}$$ is recorded, $$\mathrm{BaCl}_2$$ solution recorded the highest $$\mathrm{pH}$$.