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February 24th, 2008, 08:43 AM   #1
Joined: Dec 2007
From: Queens, NYC

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Bohr Model of the Atom + Frank-Hertz Experiment

Well i'm basically recreating the Frank-Hertz Experiment in lab. And am having some trouble with my calculations and comparison with the Energy levels using Bohr's Model of the atom.

I'm using the following Equation:

m = Mass of Atom
e = Charge of Electron
Epsilon-Sub-0 = Permittivity of Free Space
h = Planck's Constant
n = Quantized Number

Well i'm trying to find the theoretical value of the Electron Energy of Hydrogen and Mercury at Ground State (n=1) and Excited State (n=2) but i'm getting numbers way too big. When researching, i've found that Hydrogen at Ground State is supposed to give me an answer of about -13.6eV and my calculations come out way off. The number i receive is way too big.

Is the problem in the formula i'm using or is it something i did wrong?

Any help would be appreciated. Thanks!
Dmitry Malayev is offline  
February 25th, 2008, 05:26 PM   #2
Joined: Dec 2007
From: Queens, NYC

Posts: 20
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I found my error. My error was in the mass. I'm supposed to use the Mass of an electron, i can't believe i didn't catch that.
Dmitry Malayev is offline  

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