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Textbook Expert
Textbook ExpertVerified Tutor
30 Oct 2021

Given information

The series of elements:   is given for the first ionization energy. 

Step-by-step explanation

Step 1.

Ionization energy is the energy required to remove the valence electron of a neutral gaseous atom.  The ionization energy of the elements having half-filled and fully filled outermost shall is more.

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