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Look And here's your shmoop du jour brought to you

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by electron liberation which sounds like the tiniest political movement

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in the universe according to bores Model of the atom

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Which of the following is true Select two answers And

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here the potential answers All right four meals Simon energy

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All right well niels bohr was a huge contributor to

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our understanding of the physical world he also founded What's

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now known as neil's bohr institute could be a little

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weird taking a class from someone called professor board Though

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boris model of the atom is still one of the

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best ways to think about and visualize these sub sub

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sub microscopic particles The bohr model describes how electrons orbit

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the nucleus of an atom Electrons orbited different levels We

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didn't think of it like our solar system where the

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planet's orbit at different distances from the sun The different

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orbital distances in adam are set based on the energy

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level of the electrons that well closer to the nucleus

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Electrons are in lower energy orbits so it takes more

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energy to move them away from the nucleus I didn't

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get sucked in let's Look at this diagram of hypothetical

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energy levels in an adam we can see that it

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takes more energy to move an electron from the lowest

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orbit to the point where it's completely liberated from the

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atom than it does to move an electron from a

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higher orbit So this means aids incorrect now One electron

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is in a higher energy state and then loses energy

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It moves back down bolstered of the nucleus like that

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And when this happens the electron beam it's a faux

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thanh like shooting off a flare gun as it's running

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out of gas The wavelength of that proton is related

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to the change in energy of the electron The smaller

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the change in energy the longer the wavelength Well the

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wavelength of the admitted photons equals planks Constant times The

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speed of light divided by the change in energy equation

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looks like that the equation here place constant is represented

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by age Now remember that diagram we saw earlier with

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the energy level thing Yeah let's Look at it again

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We can see that the biggest difference in energy is

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between the first and second level's Answer b says that

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the longest wavelength of photons can have is between any

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calls to an n equals one levels They're looking at

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the diagram We can see there's no way that's true

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largest difference in energy is between the n equals one

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and n equals two levels so that it mean the

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resulting photons would have the shortest wavelength The answer is

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incorrect also Okay we're making progress We know what the

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wrong answers are And being smarties were able to deduce

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that the right answer here is see andy but just

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for fun Let's figure out why they're right And yet

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we know our idea of funds Little weird All right

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Answer c says that the energy required to liberate an

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electron from the end energy level is different for all

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atoms of different elements With only one electron Well the

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formula to calculate the amount of energy needed A liberating

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electron is the atomic number over the energy level times

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negative thirteen point six electron volts that's the equation right

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there Because adam's all have a different atomic number based

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on the number of protons in their nuclei the energy

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level will always be different And answer D states the

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energy required to liberate an electron from a smaller radius

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Orbit is larger than for a large radius orbit Right

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Well this matches what we've already seen in our electron

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level diagram this thing after all an electron closer to

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the nucleus will have a smaller orbital radius Like how

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mercury has a smaller orbital radius around the sun And

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we do on earth Well these atomic structures look simple

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but as physicists we know that nothing is as simple

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as it looks A lot going on even the tiniest

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of systems But there aren't subatomic politics That would just

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be silly Which is a good thing because in a 00:03:58.17 --> [endTime] particle campaign election electrons would always go negative

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