Question

How is oxygen ion formed with sodium(2)ion

Answer 1

Dear student,

Group 1 and 2 oxides are ionic. They dissociate to form the oxide ion as ($O^{2-}$ )
The reaction takes place as :
$N{a}_{2}O\left(s\right)\to 2N{a}^{+}\left(aq\right)+O^{2-}\left(aq\right)$

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