Question

Problem 54c

Answer 1

Given information

The ionization energy can be defined as the energy required to remove a valence electron of a neutral, gaseous atom. 

Step-by-step explanation

Step 1.

As the atomic size increases, the ionization energy decreases because of the decrease in the nuclear attraction force. With the decrease in the atomic size, the ionization energy increases because the nuclear attraction increases on the valence electrons.