Discussion
Which of the following pair of oxides is neutral?
Answer: E
The neutral pair is CO and \(N_{2}O\).
Carbon monoxide and dinitrogen oxide react with neither acids nor bases, which makes them neutral oxides (NO is another).
Each other pair contains a non-neutral oxide: \(Na_{2}O\) is basic, \(Cl_{2}O_{7}\) is strongly acidic, \(Al_{2}O_{3}\) is amphoteric, and \(As_{2}O_{3}\) is amphoteric (mainly acidic).
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