This includes semiconductor theory and diodes.
The same type of atoms
the same number if atoms
A unique type of atom
Several different types of atoms
One nucleus and only one electron
One nucleus and one or more electrons
Protons, electrons, and neutrons
Answers (b) and (c)
Protons and neutrons
Electrons
Electrons and protons
Electrons and neutrons
8
2
4
14
8
2
4
32
0
1
2
3
In the closest orbit to the nucleus
In the most distant orbit from the nucleus
In various orbits around the nucleus
Not associated with a particular atom
A valence electron breaks away from the atom
there are more holes than electrons in the outer orbit
Two atoms bond together
An atom gains an extra valence electron
Germanium
Carbon
Copper
Silicon
First band
Second band
Conduction band
Valence band
Recombination
Thermal energy
Ionization
Doping
An electron falls into a hole
A positive and a negative ion bond together
A valence electron becomes a conduction electron
A crystal is formed
The interaction of valence electrons
Forces of attraction
Covalent bonds
Answers (A), (B), and (C)
Four valence electrons
Four conduction electrons
Eight valence electrons, four of its own and four shared
No valence electrons because all are shared with other atoms
Electron only
Holes only
Negative ions
Both electrons and holes
There are no free electrons
The free electrons are thermally produced
There are only holes
There are many electrons as there are holes
Answers (B) and (D)
A wider energy gap between the valence band and the conduction band
The number of free electrons
The atomic structure
Answers (A), (B), and (C)
Doping
Recombination
Atomic modification
Ionization
Germanium
A p-type semiconductor
An n-type semiconductor
A depletion region
Reduce the conductivity of silicon
Increase the number of holes
Increase the number of free electrons
Create minority carriers
Holes
Valence electrons
Conduction electrons
Protons
Minority carriers that are thermally produced
Minority carriers that are produced by doping
Majority carriers that are thermally produced
Majority carriers that are produced by doping
The recombination of electrons and holes
Ionization
The boundary of a p-type and an n-type material
The collision of a proton and a neutron
Ionization
Diffusion
Recombinations
Answers (A), (B), and (C)
Nothing but minority carriers
Positive and negative ions
No majority carriers
Answers (B) and (C)