0
It is not the number of valence electrons that an insulator has that is important. It is the way the valence electrons are "arranged" in the structure of the material that matters. If not all the valence electrons of a substance are "involved" in the structure of the material, then these electrons are said to be free electrons. They move about in the substance, and are free to contribute to electron flow. The metals are examples. In contrast with this, if all the electrons are bound up in a material, they are not free to support current flow, and the material is said to be an insulator. Said another way, if the valence electrons in a material are in a Fermi energy level that overlaps the conduction band for that material, the material is a conductor. In an insulator, the valence electrons are all in Fermi energy levels that are below the conduction band for that material, and it is an insulator. Applying a voltage to an insulator will not "lift" the valence electrons up into the conduction band to allow them to support current flow.
What else can I help you with?
How many valance electrons does a semiconductor have?
It is not the number of valence electrons that an insulator has that is important. It is the way the valence electrons are "arranged" in the structure of the material that matters. If not all the valence electrons of a substance are "involved" in the structure of the material, then these electrons are said to be free electrons. They move about in the substance, and are free to contribute to electron flow. The metals are examples. In contrast with this, if all the electrons are bound up in a material, they are not free to support current flow, and the material is said to be an insulator. Said another way, if the valence electrons in a material are in a Fermi energy level that overlaps the conduction band for that material, the material is a conductor. In an insulator, the valence electrons are all in Fermi energy levels that are below the conduction band for that material, and it is an insulator. Applying a voltage to an insulator will not "lift" the valence electrons up into the conduction band to allow them to support current flow.
How many valence electrons does indium?
Indium has 3 valence electrons.
Can electrons move freely in an insulator?
No, electrons cannot move freely in an insulator. Insulators have a full valence band and a large band gap that prevents the movement of electrons through the material. This lack of mobility is what distinguishes insulators from conductors.
How many valence electrons are there argon?
8 valence electrons- 1s22s2p63s2p6
How many valence electrons does zinc have?
Zinc has two valence electrons.
How many valence electrons does Aluminume have?
Aluminum has 3 valence electrons.
How many valence electrons does Bi have?
5 valence electrons.
How many valence electrons Be have?
Beryllium has two valence electrons.
How many valence does electrons gallium have?
3 valence electrons
How many valence electrons are in an atom of aluminium?
There are 3 valence electrons in an atom of aluminium.
How many the valence electron of xenon?
There are no valence electrons.
How many valence electrons does led have?
Lead has 4 valence electrons.
