Electronic Devices - Semiconductors - Discussion
Discussion Forum : Semiconductors - General Questions (Q.No. 12)
12.
Effectively, how many valence electrons are there in each atom within a silicon crystal?
Discussion:
32 comments Page 1 of 4.
Atish said:
7 years ago
As we all know that a single si atom has 4 valence electrons in valence orbit. The covalent bonding is done between 4 same si atom by sharing one electron from one atom.
So 4valance+4 shared = 8.
So 4valance+4 shared = 8.
(1)
Jitendra said:
9 years ago
In question ask si crystal, not si atom so one si crystal surrounding by 4 si atom hence in si crystal 4 valence electrons & 4 covalent electrons finally 8e.
(1)
Miss jyoti said:
1 decade ago
The remaining 4 atom, which is present in last cell are making bond with 4 another atom. that is 4+4= 8.
Yasaswini said:
7 years ago
How could it be?
Please explain more clearly.
Please explain more clearly.
Rakesh Kumar Singh said:
8 years ago
I also agree @Hariom.
Dhyan said:
9 years ago
The silicon (si) atom and silicon (si) crystal have a different configuration of electrons.
Yenkumar sen said:
9 years ago
Yes here's 8 is Right.
I agree with the given solution.
I agree with the given solution.
Gitanjali said:
9 years ago
Question is about silicon crystal i.e. (si)2.
So valence electrons 8.
So valence electrons 8.
Mayank said:
10 years ago
Valance electron are electron that able to make covalent bond and that are in outer most shell. So it must be 4.
Neeti said:
1 decade ago
Si atom has 4 electron, but when we talk about Si crystal it means many Si atoms packed together, thus they form covalent bond for becoming stable. Thus there are 8 electrons in outer valence band.
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