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39 General Chemistry I and II Lab Manual Al
Y Dakota State University Page 95 of 232 Experiment 7: Quantum Mechanics 40
66 General Chemistry I and II Lab Manual Zr
Dy Dakota State University Page 96 of 232 Experiment 7: Quantum Mechanics 67
Np Dakota State University General Chemistry I and II Lab Manual 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 Page 97 of 232 Experiment 7: Quantum Mechanics 94
109 General Chemistry I and II Lab Manual Pu
Mt Part II: Electronic Configuration and the Periodic Chart
I’ve provided for you a filled, and an empty, periodic chart. Be very careful to note the
difference between the “classic” periodic chart (the filled periodic chart) and the empty periodic
chart that more accurately reflects the filling of the shells in the sixth and seventh period. Fill in
just the very last portion of the electronic configuration (from above). Answer the following
(1) Why are the first two columns offset?
(2) Why are the last six columns offset?
(3) Why are there ten columns of transition metals?
(4) Why do I contend that it is more appropriate to put La and Ac in the bottom two periods, and
put Lu and Lr in the transition metals?
(5) Why don’t we see the use of any subshells higher than the “f” subshell? Dakota State University Page 98 of 232 Experiment 7: Quantum Mechanics General Chemistry I and II Lab Manual (6) IF enough elements are created to necessitate the use of the “g” subshell (the one
immediately following the “f” subshell), how many columns would this block need in the
Part III: HyperChem
Often, one of the biggest problems with quantum mechanics is the abstract nature of it. The
concept of shells, subshells, orbitals and spin all arise as mathematical solutions to
Schroedinger’s equation, and our only verification that the results are reasonable at all is by
comparison with experiment. We will show in later experiments how these calculations can be
used to calculate experimental results, but for the time being, let’s at least get used to what these
mathematical tells us by looking at the shapes of orbitals.
Start HyperChem on your system. Open up the build tool/periodic chart by double
clicking on the “draw” tool. Click on Krypton (Kr); this is the first noble gas that uses s, p, d and
f subshells. Put a single Krypton atom on the screen (it should appear as a simple circle).
Choose “SetUp” and click on “Ab Initio.” This will solve Schroedinger’s equation for
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