Question

Mg + O2 ------> MgO

what happens to O2

how it becomes O
​

Answer 1

Answer:

it looses 2 electrons

Explanation:

Consider the example burning of magnesium ribbon (Mg). Whenmagnesium burns, it combines withoxygen (O2) from the air to formmagnesium oxide (MgO) according to the following equation: 2Mg(s) + O2(g) → 2MgO(s) ... This is because whenMg(s) becomes Mg2+, it loses 2 electrons.

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Answer 2

Explanation:

valency if Mg is 2 and that of O is also 2 so as we know that on reacting the valency of chemicals gets interchanged so it will become Mg2O2 and we can take 2 common so it will be MgO

in case u want to know why O2 is given here it is because we cannot take nascent oxygen in free state oxygen occurs as O2 only u cannot write nascent O.

Hope it helps....