Photons and Electrons

[Sarina Mak 1B]

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?
The answer is 1 million electron, but I do not understand. I thought that hydrogen only has 1 electron, so I believed that hydrogen absorbing 1 million photons would excite it to higher levels, but only that 1 electron. How is the answer 1 million electrons?

[Madeline Louie 1I]

Remember that it is referring to a hydrogen gas sample, so there is more than one hydrogen gas molecule present. Since there one photon interacts with one electron, this will lead to the exitation of 1 million hydrogen atoms.

[Ralph Zhang 2L]

As mentioned above, a sample does not mean one molecule. In real life, I do not think it would be practical/possible to isolate just one hydrogen gas molecule or snipe it with photons either.

[CesarLec1]

A good thing to remember is that a photon will act directly with another electron so if there are one million photons it will at most interact with one million electrons.