About The Bohr Model of the Hydrogen Atom

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  • #1
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Homework Statement



What energy (in eV) is required to remove the remaining electron from a singly ionized helium
atom, He+ (Z = 2)?
(a) 3.40 eV (c) 27.2 eV (e) 76.9 eV
(b) 13.6 eV (d) 54.4 eV


Homework Equations



Ei - Ef = hf

The Attempt at a Solution



Ef: the 1st level
Ei: the 2nd level
 

Answers and Replies

  • #2
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Do you know the relation between E and Z & n.

[tex]E \propto Z[/tex]
[tex]E \propto \frac{1}{{n}^{2}}[/tex]

For the ground state(n=1) of hydrogen(Z=1), E = -13.6eV

Here Z=2 & n=1.
 
Last edited:
  • #3
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Thanks a lot (:
 

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