Question

what happens when a magnesium ribbon is heated in presence of air​

Answer 1

Answer:

it gives out a bright white light

and then it leaves a white powdery ash behind

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Answer 2

Answer:

It forms magnesium oxide

Explanation: When we burn magnesium ribbon in presence of air it reacts with the oxygen present in the air to form magnesium oxide(Mg0) which gives out white light . The reaction is as follows :-

2Mg  +  O2 ----->  2MgO

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