give reason why Aluminium is used for packing food articles although it is reactive metal?
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Aluminium is reactive only when a freshly scrached surface is exposed to atmosphere. But when it is kept in air oxygen for some time ,the upper surface get converted into its oxide called aluminium oxide (al203), which gets deposited as a thin coating on the surface of the metal therefore , this metal is used for packing food articles which do not get spoiled in the foil.
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