Respuesta :
Magnesium oxide is not composed of [tex]Mg^{+}[/tex] and [tex]O^{-}[/tex] ions because of the balanced chemical reaction.
A reaction is said to be balanced chemical reaction when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side. For example in the chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3). The reactants are nitrogen and hydrogen, and the product is ammonia.
In the above given case when we write the balanced chemical reaction for the formation of Magnesium oxide it is as follows;
2Mg + [tex]O_{2}[/tex] ⇄ 2MgO
From this reaction we can clearly see that 2 molecules of magnesium is reacting with one molecule of oxygen. So each magnesium will loose one electron to bond with oxygen so since there are 2 magnesium atoms the total charge on the ion would be [tex]Mn^{2+}[/tex] and similarly in case of oxygen it would be [tex]O^{2-}[/tex]
To know more about balanced chemical reaction
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