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Do Now Write the electron configuration for zinc, using orbital notation (include electron spins).
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Electrons: The Final Chapter
Mr. Quinn and Ms. Tom Williamsburg High School for Architecture and Design 10/22/13
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Aim How do atoms absorb energy?
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Definitions Ground state Excitation Excited state Emission
Lowest energy state Excitation Absorbing energy Excited state High energy state Emission Releasing energy
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An Example: Gallium
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Pick an atom, an excited atom!
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The Case of Singlet Oxygen
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A New Solar Cell? Model 413 has electrons jumping a shorter distance than the old model Model 413 absorbs green light, the old model absorbs violet
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Problem 1: When electrons in an atom in an excited state fall to lower energy levels, energy is absorbed, only released, only neither released nor absorbed both released and absorbed
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Problem 2: Compared to a sodium atom in the ground state, a sodium atom in the excited state must have a greater number of electrons a smaller number of electrons an electron with greater energy an electron with less energy
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Problem 3: Which is an electron configuration of a fluorine atom in the excited state? 1s22s22p4 1s22s22p5 1s22s22p43s1 1s22s22p53s1
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Problem 4: Which is a possible electron configuration for argon in the excited state? 1s22s22p73s23p5 1s22s32p53s23p6 1s22s22p63s13p7 1s22s22p63s23p54s1
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Problem 5: Which electron configuration represents an atom in an excited state? 2-6 2-7 2-7-1 2-8-1
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