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
