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Ionization Energy

  1. Nov 3, 2005 #1
    Which ionization process requires the most energy?

    a. P(g) --> P+(g) + e-
    b. P3+(g) --> P4+(g) + e-
    c. P2+(g) --> P3+(g) + e-
    d. P+(g) --> P2+(g) + e-

    Is it b. P3+(g) --> P4+(g) + e- because this is the fourth ionization energy (which requires highest amt.)?

  2. jcsd
  3. Nov 4, 2005 #2
    Any volunteers?

    Thank you.
  4. Nov 4, 2005 #3


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    Staff Emeritus
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    Gold Member

    Yes, that is correct.

    Each successive IE is greater than the previous one, because each ionization process removes one electron and hence increases the total attractive force on the remaining electrons (from the nucleus).
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