Which of the following statements correctly describe the similarities between Beryllium and Aluminiu — s Block Elements Chemistry Question

💡 Solution & Explanation

Beryllium and Aluminium dissolve in excess alkali to form $[Be(OH)_4]^{2-}$ and $[Al(OH)_4]^-$. Their chlorides ($BeCl_2$ and $Al_2Cl_6$) form bridged polymeric/dimeric structures and act as Lewis acids. They both form fluoro-complexes. However, statement C is false because both metals are rendered passive (unreactive) by concentrated nitric acid due to the formation of a protective oxide film.