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D orbitals first ionisation energy

  1. Sep 24, 2008 #1
    Hi, may i know why is the first row of the d orbitals (starting from scandium to zinc) should such a weird graph of ionization energy against number of protons? Here the proton number 22 element (titanium) has a higher ionization energy than the proton number 23 element (Vanadium). It is not half filled or fully filled. What's the reason?
     
  2. jcsd
  3. Sep 24, 2008 #2

    GCT

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    Probably has something to do with the additional shielding of the valence electrons with the extra electron in the d shell thus causing the IE to become slightly more negative ... Not certain about this.
     
  4. Sep 25, 2008 #3
    hmmm i guess not, cause the d shell is filled while going across it. Any other answers anyone?
     
  5. Sep 25, 2008 #4

    chemisttree

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    What shell do you think the electron comes out of during the ionization of the transition metals?

    Hint: Aufbau is NOT your friend in this case.
     
  6. Sep 25, 2008 #5

    chemisttree

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    Correct!
     
  7. Sep 25, 2008 #6

    GCT

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    Yay!
     
  8. Aug 26, 2011 #7
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