Electronic Structure of Atoms Problem Set

1. Write the electron configuration ([Ne] 3s2, 3p4) and a table with the four quantum numbers (n, l, ml, ms) for the valence electrons in the following atoms:
   1. N
   2. O
   3. P
   4. F^1-
   5. K
   6. Sc
   7. Br
   8. Br^1-

2. Based upon the Bohr model of an atom, what would happen for atoms other than Hydrogen? Helium and Lithium for example?

3. Which element could have a ground state valence shell electron in the following orbital.
   1. 3p_x
   2. 2p_x, 2p_y, and 2p_z
   3. 3d_z²

4. Make an energy level diagram that shows the electrons in the following: a) F b) F^1- c) N d) N^3- e) Si

5. Use electron configuration to explain the following trends in the periodic table. Use data from tables in your book to produce a graph that shows these trends.
   1. Atomic Radius
   2. Ionic Radius
   3. Ionization Energy
   4. Electron Affinity

Scott Van Bramer
Department of Chemistry
Widener University
Chester, PA 19013

© copyright 1996, S.E. Van Bramer
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Last Updated: Saturday, May 18, 1996