10. Periodic Properties of the Elements

Which of the following statements is false? 

For main-group elements, the atomic radius increases going down a group because: 

Which of the following statements is true? 

Why do you think an increase in atomic radius would result in a lower ionization energy?

Ionization energies decrease moving down a group because the valence electrons are farther from the

Down a group in the periodic table, the change in ionization energy is due to