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PCAT Review Questions - Pharmacy College

Category - Chemistry

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Which of the following compounds is classified as a metallic oxide?

H₂O
Na₂O
CO₂
NO₂
SO₂

Explanation

Answer: Na₂O

Metallic oxides consist of an oxygen atom bound to a metal. The only metal present in this question is sodium, so Na₂O must be a metallic oxide.

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