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Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the $n=5$ state to the $n=3$ state.

$\lambda=\frac{6.63 \cdot 10^{-34} \cdot \frac{m^{2} \cdot k g}{s} \cdot 3 \cdot 10^{8} \frac{m}{s}}{1.55^{-19} J} \approx 1.28 \cdot 10^{-6} m=1.28 \cdot 10^{3} \mathrm{nm}$$\lambda \approx 1.28 \cdot 10^{3} \mathrm{nm}$

Chemistry 101

Chapter 7

Quantum Theory and the Electronic Structure of Atoms

Electronic Structure

Carleton College

Rice University

Brown University

Lectures

04:49

In chemistry and physics, electronic structure is the way the electrons of an atom are arranged in relationship to the nucleus. It is determined by the subshells the electrons are bound to, which are in turn determined by the principal quantum number ("n") and azimuthal quantum number ("l"). The electrons within an atom are attracted to the protons in the nucleus of that atom. The number of electrons bound to the nucleus is equal to the number of protons in the nucleus, which is called the atomic number ("Z"). The electrons are attracted to the nucleus by this mutual attraction and are bound to the nucleus. The electrons within an atom are attracted to each other and this attraction determines the electron configuration. The electron configuration is described by the term symbol, which is the letter used to identify each subshell.

16:45

In physics, the wave–particle duality is the concept that every object or process, no matter how large or how small, behaves as both a wave and a particle. The wave–particle duality is one of the central concepts in quantum mechanics.

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question through 31 carbonite away land Before time I needed my hydrogen Adam, but he's dropped from. And even if I said to any court Priestess todo this problem, you have to calculate the energy relaxation of hydrogen when they move from and notify to undergo. Three says. And after that you just we apply go formula light and we don't problem 29 to couple. Either way, land and those should. But it's speak. We should have this one 31. We know for hydrogen there the a Hickel what I want. And in a show, minus and final, both of them square. So we have this do boy hating time. 10 Not hating the right buscando you have to remember. And because they move from the Anika if I so that and the initial should be five square here and the final two with three square here. So So do this with that. About 155 mine type 10 negative 19 Joe for the energy relaxation off hydrogen ego, This number so continuing greenoe Delta equal. I see over delta he what we call we have there. The ease piece negativity is a weapon of this city boys in three tight end at the 34 Joe Policy. I see 17 nano meter here. I do not know meter because of oil, and they require also have nano meter. Well, how good the absolute here. You should have asked you here. So this will be equal Because energy cannot be negative. The negative e the us that the energy reduction from the high level toe the lower level show up on absolute simple we have it's one. So they should be equal wandering the a Tom three. No, no, Amita.

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