Electronics-semiconductor Principles
Electronics-semiconductor Principles
42. What is an energy gap?
- the space between two orbital shells
- the energy equal to the energy acquired by an electron passing a 1 V electric field
- the energy band in which electrons can move freely
- an energy level at which an electron can exist
43. Silicon atoms combine into an orderly pattern called a:
- covalent bond
- crystal
- semiconductor
- valence orbit
45. Elements with 1, 2, or 3 valence electrons usually make excellent:
- conductors
- semiconductors
- insulators
- neutral
47. Which material may also be considered a semiconductor element?
- carbon
- ceramic
- mica
- argon
50. When an electron jumps from the valence shell to the conduction band, it leaves a gap. What is this gap called?
- energy gap
- hole
- electron-hole pair
- recombination