Question

insulators do not conduct electricity as they do not have free​

Answer 1

Answer:

In an insulator there are no, or very few, free electrons, and electric charge cannot move freely through the material. Some materials called semiconductors are intermediate in their properties between good conductors and good insulators.

Answer 2

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This energy band gap is very large in case of insulators.This is because electrons requires energy to get excited. The energy required is very high. Thus insulators do not conduct electricity or insulators are insulators because of very large energy band gap between the valence band and conduction band.

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