Electronics - Voltage and Current - Discussion
Discussion Forum : Voltage and Current - General Questions (Q.No. 24)
24.
How many valence shell electrons are there in semiconductor atoms?
Discussion:
33 comments Page 1 of 4.
Dinesh Kumar gadde said:
8 years ago
The outermost orbit of an atom is called as valence shell.
The number of valence electrons present in a valence shell is based on its capacity.
For example: take silicon a semiconductor, which has 4 valance electrons.
The number of valence electrons present in a valence shell is based on its capacity.
For example: take silicon a semiconductor, which has 4 valance electrons.
(1)
Logesh said:
9 years ago
The outermost orbit of the atom are valence orbit.
For semiconductor 4 valence electrons are there.
For semiconductor 4 valence electrons are there.
Meena said:
9 years ago
I can't understand anything. So please explain me clearly.
Qamar hayat said:
1 decade ago
OK for valence electrons are in the semi conductor.
Ashish said:
1 decade ago
Its temperature co-efficient is -ve. While conductors are +ve co-efficient of temperature.
Aastha said:
1 decade ago
When the no.of valence electron is less than 4 then that will be a metal ion and when the no.of valence electron is more than 4 then it is a nonmetal.
But if the no.of valence electron is exactly 4 then it is a semiconductor.
But if the no.of valence electron is exactly 4 then it is a semiconductor.
(6)
Prabha said:
1 decade ago
We can also say using the bonds.
Conductor - Ionic bonds.
Insulator - covalent bonds.
Semiconductor - coordinate covalent bonds.
Conductor - Ionic bonds.
Insulator - covalent bonds.
Semiconductor - coordinate covalent bonds.
(1)
Ramkhi said:
1 decade ago
A semiconductor remains partially full valence band and partially full conduction band at the room temperature.
Ram said:
1 decade ago
Best example is silicon, but how can we justify is is for silicon from question?
Kunal said:
1 decade ago
A semiconductor has a gap of 1 electron volt because of this valance band and conduction band can not overlap each each other. Thus flow of current is only possible when it get heated then valance band and conductor band overlap each other for example silicon and germanium which is used in making special type of semiconductor or you can say industrial devices like fet ujt zener diode triac diac devices.
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