Question

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✨ If Mg and O2 react..where does the 2 goes after reaction???✨​

Answer 1

because valency of magnesium is two .

Hence, when Mg react with O2 and exchange of electron takes place it forms Mg2O2.

We can write it with MgO.

Answer 2

HERE'S YOUR ANSWER
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✒ Magnesium (Mg) reacts with oxygen by transfer of electrons . It's called ionic bond .

The valency of Mg is 2
Oxygen has also same valency of 2

since Mg is a metal it's plus +

and oxygen being non metal (-)

We write O2 , because it exists in diatonic form , i. e. by joining in co Velant bond .



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