Question

Why is that when a metal reacts with a non metal the reaction is always a redox reaction?

Answer 1

Hey, this is the answer you are looking for...
As metals are electropositive in nature and non - metals are electronegative in nature
the metals have a tendency to donate electrons whereas non - metals have tendency to accept electrons.
Now in redox reaction,if a body gains electrons as in the case of a metal and a non - metal, it is called reduction while if it looses electrons again as in metals and non - metals, it is known as oxidation reaction.
Combinely, both are known as REDOX REACTION.
Hope this helps.
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Thank you

Answer 2

because the adding of metal and removing of non metal is known as redox reaction while adding of non metal and removing of metal is known as redox reaction

So in this reaction metal are adding
So this is redox reaction and adding of non metal is oxidation reaction


and one things note you in a reaction we found both reaction (oxidation. and reduction reaction )