Question

why are the surfaces of aluminium and magnesium rendered passive on exposure to air

Answer 1

I think so please check it

Answer 2

• The surfaces of aluminum and magnesium are rendered passive on exposure to air as they go through the phenomenon of passivation
• Passivation is the coating on the surface that makes the substance passive.
• It helps to reduce the effect of corrosion on the environment.
• Aluminum (Al) naturally forms a thin oxide layer.
• This creates a physical barrier and reduces the chances of further oxidation in nature.