Lecture 11 - About 300 such industrial accidents in last 25...

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Web site to help visualize orbitals: http://winter.group.shef.ac.uk/orbitron/
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Each dash represents the energy of one of the states Ψ nlm . For the hydrogen atom only, the energy depends only on n (not l or m). In hydrogen-like atoms, all orbitals with the same n have the same energy. These orbitals are called “degenerate”. The degenerate set for a given n is called a shell, e.g. the 3 rd shell for n = 3. All orbitals with the same n and l , are in the same “sub-shell”. E.g. the 3d sub-shell. Figure 8-36: left side NOTE
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Figure 8-36
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Figure 8-37
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Dust Explosion at the Imperial Sugar plant in Savannah, GA on Feb. 7, 2008 kills 14 and injures 36 workers.
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Unformatted text preview: About 300 such industrial accidents in last 25 years, not to mention smaller explosions in saw mills, silos, etc. Common explosive dusts include coal, wood, sugar, flour, grains, hay, . Note filled d or f sub-shells. It turns out that only s and p (and sometimes d valence orbitals are important for bonding in filled f shell elements. Electrons completely fill shells. No chemical reactivity for He, Ne, Ar. A few compounds with Kr, Xe and Rn with F or F&O. 4f: Rare earth elements Figure 8-38 Figure 9-01 Figure 9-03 Na 2 molecules in gas phase at modest temperatures. Solid Na melts at 98 o C, Boils at 892 o C....
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Lecture 11 - About 300 such industrial accidents in last 25...

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