Lecture 20 10122008

Lecture 20 10122008 - Periodic Table and Electron...

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Periodic Table and Electron Configuration
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Periodic Trends in Atomic Radius
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Ionization Energy Ionization Energy (E i ):  defined as the amount of  energy necessary to remove the outermost  electron from an isolated neutral atom in the  gaseous state 
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Periodic Trends in Ionization  Energy
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Higher Ionization Energies
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Higher Ionization Energies Table 6.4 in our book
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Increases in ionization due to electron configurations Easier to remove electrons from partially filled
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Electron Affinity Electron Affinity (E ea )  is defined as the energy  change that occurs when an electron is  added  to  an isolated atom in the gaseous state E ea  values are generally  negative  because energy  is released Positive  energy change:  energy is  absorbed Negative  energy change:  energy is  released Value of E ea  results of interplay of  nucleus electron 
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Periodic Trends in Electron  Affinity X(g) + e - X - (g)
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Lecture 20 10122008 - Periodic Table and Electron...

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