Fe(s) + o2 (g) → fe3+ o2− what most likely happens during this reaction?

Answer : The most likely happens during this reaction is, Oxidation-reduction

Explanation :

The balanced reaction will be,

In this reaction, neutral iron loses 3 electrons and oxidizes in (+3) state, and neutral oxygen gains 2 electrons and reduces in (-2) state,

When iron react with oxygen gas to give iron oxide. This process is known as iron rusting. During the reaction, oxidation-reduction process occurs.

Oxidation : It is a type of chemical reaction in which a substance loses its electrons. Or we can say that in oxidation, the oxidation number increases.

Reduction : It is a type of chemical reaction in which a substance gains its electrons. Or we can say that in reduction, the oxidation number decreases.

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the answer is 1 i believe