Question

Which of following is true for both beryllium and aluminium ?

• A. Forms oxide layer to prevent further oxidation
• B. Forms chlorine-bridged structure in vapor phase
• C. Have strong tendencies to form complexes
• D. All of the above.

Answer 1

The correct option is D All of the above.

Like Al, Be metal also has an oxide film on the surface. Hence, both are not attacked by acids.

Beryllium chloride and aluminium chloride forms $C{l}^{-}$ bridged chloride structure in vapour phase.

Be and Al ions have strong tendencies to form complexes, $Be{F}_4^{2–},Al{F}_6^{3–}$