Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Nature of Atoms

  1. Apr 27, 2008 #1
    1. The problem statement, all variables and given/known data
    (a) What is the minimum energy (in electron volts) that is required to remove the electron from the ground state of an ionized atom (Z=2)? (b) What is the ionization energy for this ion?

    2. Relevant equations
    After doing what I got the answer for part (b)... but I don't know what part (a) requires. I thought this number would be 13.6 eV, but it's not. What exactly is part (a) asking?

    3. The attempt at a solution

    I used the equation E= -13.6*(Z^2/n^2). I plugged in 2 for Z and 1 for n.
  2. jcsd
  3. Apr 28, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook