CHE 111 Electronic Structure & Periodic Table Practice
These are some practice problems. Answers are available by a hyperlink after the last
problem. You may use paper, pencil, calculator, Periodic Table.
GIVEN: c = 3.00 x 108 and h = 6.63 x 10-34 Js
1. The frequency of an electromagnetic radiation is 6.50 x 1014 Hz. Calculate the wavelength of this radiation and calculate the energy of a photon of this radiation.
2. Write the full electron configuration of the ground state of each of the following:
a) P b) V
c) O2-
3. Write the abbreviated electron configuration for the ground state of:
a) Ca b) Cl
4. Draw an Energy Level Diagram for the electrons of the ground state of S. (The diagram should show the relative levels of energies of the orbitals.)
5. Arrange the following species into isoelectronic groups:
Ca2+ Mg2+ K+ Ne F-
6. What are the n and l quantum numbers for an electron in a 4f orbital?
7. Arrange the following atoms in the order you expect their sizes to increase:
Se, O, S, I
8. A particular electron of a phosphorus atom has this set of quantum numbers: (2,1,1,1/2). In what orbital is it?
9. Arrange the following atoms in the order you expect their Ionization Energies to
increase:
K, Br, Ca, Ge
10. A particular electron of aluminum has this set of quantum numbers: (3,0,0,-1/2). What are the quantum numbers of the electron which is spin paired with it?