CH 221 – Ziegler KEY CONCEPTS Chapters 6,7
Fall 06 10th Ed.
Class period 1 – Reading pp. 216-225.
1. Relate wavelength, frequency, and energy of light. Problem 6.15 a, b
2. State, or recognize, a brief explanation as to why excited atoms emit only certain wavelengths of
light.
3. Rank the energy difference between energy levels in the hydrogen atom. See Figure 6.13
Class period 2 – Reading pp. 225m -228(m); 231-233; 234-238(t), 238(m) – 245 (m)
4. Use the Bohr model to calculate wavelength of lines in the hydrogen spectrum. Problems 6.35
5. State the physical significance of ψ2 for an electron in an atom.
6. Identify the quantum numbers and capacities of energy levels, sublevels, and orbitals. Problems
6.49, 6.63, 6.67, 6.54.
7. Write electron configurations of atoms and ions. Problems 6.65, 6.67.
Class period 3 – Reading pp.; 239 – 249 (m); 274 ( a short but important section of Chapter 7)
8. Write orbital diagrams for atoms and ions. Problem 6.68 a-f.and this: Write electron
configurations for Na0, Na+, Cl0, Cl-, Ne, C0, N0, Al0, Al+3, Ti+2, Ti+4
9. State the number of unpaired electrons in the ground state of an atom or ion. Problem 6.68 a-f
(again), 7.45.
10. Identify periodic trends in radii, ionization energy, and electron affinity. Problems 7.21, 7.23,
7.25, 7.28, 7.33, 7.49.
