## Excitation of electrons

$c=\lambda v$

manasa933
Posts: 72
Joined: Fri Sep 29, 2017 7:04 am

### Excitation of electrons

If 1 million photons in the UV region are absorbed by a hydrogen gas sample how many electrons are excited to a higher energy level?

a.zero
b.500,00
c.1
d.1 million

Chem_Mod
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### Re: Excitation of electrons

AtreyiMitra2L
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### Re: Excitation of electrons

1 million electrons would be excited to a higher energy level. The photoelectric effect shows how photons can act as particles. Because each has a sufficient wavelength (as noted by the fact they are in the UV region), all should be excited.

SitharaMenon2B
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Joined: Thu Jul 27, 2017 3:01 am

### Re: Excitation of electrons

1 million electrons is correct because each photon interacts with one electron, and a photon will only be absorbed if it has enough energy to excite an electron, so for every photon that is absorbed, one electron is excited.

Christy Zhao 1H
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Joined: Fri Sep 29, 2017 7:07 am

### Re: Excitation of electrons

Adding on, one photon interacts with one electron, and each photon must have enough energy to eject one electron to be absorbed. So if 1 million photons are absorbed, 1 million electrons are excited to a higher energy level.

Diane Bui 2J
Posts: 61
Joined: Sat Jul 22, 2017 3:00 am

### Re: Excitation of electrons

There is a 1 to 1 interaction between the photon and the electron! So 1 million electrons would be excited.