Of the following statements, _ is not true for oxygen.
A) Dry air is about 79% oxygen.
B) The chemical formula of ozone is O3.
C) The most stable allotrope of oxygen is O2.
D) Oxygen forms peroxide and superoxide anions.
E) Oxygen is a colorless gas at room temperature.
Correct Answer:
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Q20: Hydrogen is unique among the elements because
Q21: All of the halogens _ _.
A) exhibit
Q22: Of the following elements, which has the
Q23: In which of the following atoms is
Q24: Of the following elements, has the most
Q26: Which of the following correctly represents the
Q27: Which one of the following compounds would
Q28: Which of the following traits characterizes the
Q29: is a unique element and does not
Q30: Of the following elements, which has the
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