Core
Periodicity: Ionization Energy & Electron Affinity
Slide 22 of 28
Practice Questions
1. Write the reaction equation corresponding to
(a) the first ionization energy of sodium
(b) the second ionization energy of lead.
2. Represent using a chemical equation the third ionization of
aluminum.
3. Choose the species with the larger ionization energy:
(a) Li or Be,
(b) C or N,
(c) Ne or Na,
(d) Na+ or Mg+
4. List the elements Be, N and Mg in order of increasing
ionization energy and explain the order.