Asked by danny
q4 What element has the greatest first ionization energy?
Li
Na
K
Rb
Cs
Li
Na
K
Rb
Cs
Answers
Answered by
DrBob222
As you down the table in a group, the last electron (in this case the single electron in the outside shell) is farther and farther away from the nucleus. So it gets easier to pull that electron away.
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