Element X has a total of 19 electrons and can react with O₂ to form an oxide. Which of the following statements is NOT true of the oxide of element X?
University of Ilorin CHM101 2015 past question
- When exposed to air, it slowly changes to liquid
- Its solution in water conducts electricity
- Its solution in water on evaporation gives a white solid
- Its oxide, when slowly heated, regenerates the element X
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