Chemistry - The Central Science Chapter 7

Chemistry - The Central Science Chapter 7 - Chapter 7...

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Chapter 7 Periodic Properties of the Elements A. Shielding and Effective Nuclear Charge B. Atomic Size C. Ionization Energy D. Electron Affinity E. Descriptive Chemistry of Selected Elements HW #P6 7.4, 7.9, 7.14, 7.24, 7.26, 7.37, 7.44, 7.62, 7.69, 7.95
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Chapter 7 Periodic Properties of the Elements The periodic table was derived because some elements have similar properties. In Chapter 6 we found that electron configurations play a role. A. Shielding And Effective Nuclear Charge Shielding and effective nuclear charge are the keys to understanding atomic size and ionization potential. An electron is attracted to the nucleus with the amount of attraction directly proportional to the nuclear charge experienced by that electron. Consider Li.
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charge such that the 2s electron is attracted by a nuclear charge of - 1 (actually 1.3); this is the effective nuclear charge . Now consider Be.
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This note was uploaded on 08/21/2008 for the course CHE 101 taught by Professor Churchhill during the Spring '08 term at SUNY Buffalo.

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Chemistry - The Central Science Chapter 7 - Chapter 7...

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