AHL Atomic
Structure: Ionization Energy
Slide 9 of 18
Evidence for
shells: Successive ionization energy of Sodium
A plot of the successive ionization
energy of sodium shows a grouping of 1, 8, 2 (from the outermost
to the innermost shell).
–In other words, a main energy level
configuration of 2, 8, 1 (from the innermost to the outermost shell).
