Name: 光電子分光学入門｜AP化学｜カーンアカデミー (Introduction to photoelectron spectroscopy | AP Chemistry | Khan Academy)
Uploaded: 2021-01-14T10:52:18.000Z
Duration: 8 min 24 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

to the idea of photoelectron spectroscopy.

It's a way of analyzing the electron configuration

and you might see something like this on an exam,

the analysis will be done by taking a stream of that atom,

and then the other direction, let me label this,

that are going to bombard those atoms, photons.

Now these photons are high enough energy,

the electrons that are closer to the nucleus,

and so more of that energy from the photon

so those closer electrons aren't going to get as far

those have the lowest electron binding energy.

and so you have more of the photon's energy

is going to be transferred into kinetic energy.

And so one way to view the photoelectron spectrum

is it gives you a sense of roughly how many electrons

And you can see that the binding energy increases

the binding energy is inversely proportional

to how much kinetic energy these electrons have

And so this spike on our spectrum at the extreme left,

and then these would be electrons further out

and then lower binding energy after that.

to actually come up with the electron configuration

Pause this video and try to think about that.

this spike right over here would correspond

and we know that those aren't the only electrons

'cause there's electrons that have lower binding energies,

and so we know that they have two one S electrons

and then we can then think that this next spike,

so we must have filled up the two S sub shell

And the reason why this really makes a lot of sense is

notice the detector is detecting more electrons there,

and actually the way this was constructed,

it's not always going to be this perfect,

but you can see you have roughly three times as many two P

electrons as two S electrons, which makes sense.

The two P sub shell can fit six electrons.

which is going to have a lower binding energy.

字幕リスト動画再生

光電子分光学入門｜AP化学｜カーンアカデミー (Introduction to photoelectron spectroscopy | AP Chemistry | Khan Academy)

assume

slightly

positive

typically