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Why don’t we write Mg 2 + O 2 = MgO in the reaction of Magnesium ribbon burning in air, since the valency of magnesium is 2.

Why don’t we write Mg2 + O2 = MgO in the reaction of Magnesium ribbon burning in air, since the valency of magnesium is 2.

Grade:10

1 Answers

Vaibhav Gupta
73 Points
5 years ago
yes you can write, Mg2 + O→ Mg2O2 
we can cacel the 2. for eg. if the formula for a compound is – X3Y, then we can write this as XY3
that is why we can write Mg2O2 as MgO, however if your write MgO as Mg2O2 , it is not wrong

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