10. Periodic Properties of the Elements

Why is it easier to remove an electron from a sodium (Na) atom than from a magnesium (Mg) atom?

Why does ionization energy tend to increase as you move across a period in the periodic table?

Which element has a higher first ionization energy: potassium (K) or bromine (Br)?

Which of the following best describes the pattern of the first five ionization energies of an element across a period in the periodic table?

How does the shielding effect alter the ionization energy of an atom?

Which one of the following statements is true regarding ionization energies?