Question

a energy gap is highest in the case of..........a) a metal. b) a semiconductor c) an insulator d) diole......... please answer me now....​

Answer 1

Answer:

Energy gap is highest in the case of c) an insulator as the band gap is very large and all the electrons are in the valence band. Insulators are mostly non-metals in which electrons are strongly bonded to nucleus by strong coulombic forces of attraction.

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Answer 2

An energy gap is highest in the case of insulators (option-c).

• As per EBT( energy band theory), the energy gap is the band gap between the valence band and the conduction band.
• In the case of metals, the energy gap is zero because both the conduction band and valence band are overlapped on each other, hence energy gap between the band is minimum.
• In the case of semiconductors, the gap between the conduction band and the valence band is 2 eV to 3eV.
• While, the band gap between the valence band and the conduction band is more than 3eV in insulators, hence it is maximum among metal and semiconductors.