Solid barium oxide has ions, but it does not conduct electricity. Why

1.	Solid barium oxide has ions, but it does not conduct electricity. Why ?
Answer» Solution :Electrical conductivity isdue to the movement of free electrons or freeions. Barium OXIDE is an ionic SOLID. It has no free electrons. Although solid barium oxide has ions, `Ba^(2+) and O^(2-`), the ions are not free to move in solid STATE, due to a definite crystal lattice.

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