Energy band-semiconductor

A group of converged energy levels is called?

• Energy band

• Energy gap

• Forbidden gap

• cluster

Magnesium oxide has a forbidden gap of 1.1 eV. Is this material a conductor, an insulator, or a semiconductor?

• Conductor

• Semi-Conductor

• Insulator

• None of these

For the energy-band diagrams shown, which ones represent semiconductors?

• A

• B

• C

• All of these

Which of the following materials would make a better semiconductor: element (X) with a forbidden gap 5.3-eV wide, element (Y) with a forbidden gap 1-eV wide, element (Z) with no forbidden gap?

• X

• Y

• Z

• All of these

From which material would it be most difficult to remove an electron? element (X) with a forbidden gap 8-eV wide, element (Y)with a forbidden gap 3-eV wide, element (Z) with no forbidden gap?

• X

• Y

• Z

Effectively, how many valence electrons are there in each atom within a silicon crystal?

• 2

• 8

• 16

• 4

Which material may also be considered a semiconductor element?

• Thallium

• Ceramic

• Germanium

• Glass