right

Thankyou for the compliment.

+Justin Huang haha - a slight microphone distortion, but yes, sounds like a soda can!

Justin Ha ha

cracking a cold one with the boys

lmao u made my day!

Justin Hunag hahahah you never let anything slide pass you

Thanks for the positive feedback.

I am from India and I like his video . You are right. Actually i study in 12th class ,ya there is some hard English word but I understood all.

Thankyou. That’s a nice compliment.

Me too! I'm currently doing this chapter. It's very interesting.

Thanks, please share ;-)

+Craig Russell I agree, excellent idea

Yes, all electron holes occupied, in this element there is only one electron in the outermost shell. In other elements there could be more electrons in that shell and in turn have more states possible to be occupied. Hope this helps!

SOMEONE please answer this guy's question, it is driving me crazy

The Valence Band is the shell that contains the outermost electron in an atom in the base energy state. The Conduction Band is the shell an excited electron can move UP into while still remaining associated to its atom. An electron that absorbs enough energy to be ejected from the atom leaves the atom in an ionic state. Once a valence electron moves into the conduction band, a voltage can replace an electron in the Conduction Band with an electron from a neighboring atom. This constant movement of electrons is an electrical current. If the Valence Band and Conduction Band overlap, a Valence Electron requires little voltage to move electrons from one atom to the next. Most diagrams show the Valence and Conduction Bands overlapping within the same atom in a metal, but a better understanding is that the Conduction Bands of neighboring atoms overlap. It’s more like a group of neighboring metallic atoms share the SAME Conduction Band which is what makes them good electrical conductors. Think of a section of sidewalk. If they are right next to each other, you can still see that they are sections, but for all intents and purposes, they all make ONE sidewalk. This allows you to walk (low energy) from one to the next. These are conductors. However, if you remove every other section, you know have to jump (higher energy) from one to the next. These are insulators. If you remove every other sidewalk section, but you install a curb along side the sidewalk, you can step on one sidewalk section with one foot, and on the curb with the other foot and the next sidewalk section with your first foot. This is a semiconductor (sidewalk sections) with a dopant (curb). Without a dopant, the semiconductor is an insulator. With the dopant, the semiconductor is a conductor.

You’re welcome

Glad it helped.

Glad it helped ;-)

thanks!

the conduction band in a semiconductor means that they can "conduct" which is to move freely among atoms, so they are no longer associated with their home atom.

Thankyou 😀

Glad it helped!

Thanks I use Prometheus Inspire and then edit with adobe premiere

Thanks.

It has to do with the difference in behavior between an individual atom (like in a gas state) and a crystal, where the atoms are interacting. In an individual atom energy levels are discrete. In a crystal there are many more levels. The many levels form a “band”. The band is not a physical space, it is what you see in a diagram, a collection of many possible energy levels. The problem with explaining things at this level, you need somewhat simplistic models of reality to get your point across. These models are a representation of reality, not reality itself. The representation of an atom as a kind of mini solar system is also just a model that helps explaining the properties of the atom. In that model, the shells don’t represent an real trajectory of electrons, but they symbolize the discrete energy levels the electrons can have inside the atom.

Glad you liked it!