Element X has a total of 19 electrons and can react with oxygen to form an oxide. Which of the following statements is NOT true of the oxide of the element?
-
A.
When exposed to air, it slowy changes to liquid -
B.
its solution in water conducts electricity -
C.
Its solution in water, on evaporationm gives a white solid -
D.
Its solution in water liberates hydroge when in contact with aluminium metal -
E.
Its oxide, when stronlgy heated, regenerates the elements X