CHEM 111 Lecture Notes - Aufbau Principle, Electron Configuration, Noble Gas

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10 Mar 2014
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A zeff goes down as the electron is further from the nucleus. B as z increases, the amount of energy to remove an electron goes up. D only 3 quantum numbers are necessary to specify the exact location of each electron. Shielding and zeff contribute to a more complicated picture of orbital energies. Each orbital has its own energy level, even within a shell (n value) Within a given n value, the lower the l value, the lower the energy. Subshell letters: s, p, d, f, grouped together. Not read as exponents: one ess one . Note that full orbitals remain part of the full configuration (1s22s1) Applies to degenerate orbitals orbitals of equal energy. The 3 p orbitals or 5 d orbitals. Place unpaired electrons in each orbital before pairing up. How many electrons are possible in the 3rd energy shell? (n 3: 18, 2, 6, 8, 12. The possible l values are 0, 1, and 2.

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