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Energy required to ionize a hydrogen atom from n=1 
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#1
Feb2205, 11:46 PM

Sci Advisor
PF Gold
P: 1,544

We were given this formula in class:
[tex]delta E= chR (\frac{1}{1^2}  \frac{1}{inf})[/tex] the [tex]1/1^2[/tex] is because it is in ground state. So the formula simplifies to [tex]chR[/tex] c = 299792000 h = 6.626E34 R = 10970000 and [tex]1.60217653*10^{19} Joules / eV[/tex] I get: [tex]1.36009026784583 * 10^{37} eV[/tex] The teacher did it in class and got 13.6 eV Same answer, just 38 magnitudes off What am I doing wrong? ** edit ** I figured it out. It's not 19, its 19 for Joules to eV 


#2
Feb2305, 01:03 AM

Sci Advisor
HW Helper
P: 11,955

There you go:you have scientifically proven that [itex] 10^{19} [/itex] and [itex] 10^{19} [/itex] are 38 orders of magnitude apart.Congratulations!!
Daniel. 


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