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I need some homework help

  1. Jun 7, 2006 #1
    WHy is the first ionization energy for sodium much smaller than the secon ionization energy for sodium? i dont understand this.
  2. jcsd
  3. Jun 7, 2006 #2


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    Hi there Pechy and welcome to PF,

    Why do you think it is? Think about shell configuration and atomic charge.
  4. Jun 8, 2006 #3


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    Shell configuration ??
    Atomic charge total is zero ... the ionized sodium is a positive ION.

    THAT is the main reason the second electron is much harder to remove ...
    for ANY object, not just a sodium atom/ion.
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