Science, asked by nandechappasha, 1 year ago

Surface of some metals lose there brightness when kept in air for a long time. why?

Answers

Answered by shanki200801
33
some metals like magnesium are reactive to oxygen in open air
so the reaction will be like
2Mg +O2= 2MgO
these oxides of metals are non lustrous so they lose their brightness.

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