7 - Chem 6A Presentation #7 Overview Chapter 1: The Quantum...

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Chem 6A Presentation #7 2006-10-17 1 Overview Chapter 1: The Quantum World What are the periodic trends in atomic properties? Fundamentals C What are compounds? What are the different kinds of compounds?
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2 What are the periodic trends in atomic properties? What is the atomic size (radius)? It depends on the type of element.
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3 What are the periodic trends in atomic properties? Across period: Z eff dominates Down group: n dominates Shielding from (n-1)d electrons prevents significant contraction across a period of transition elements
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4 What are the periodic trends in atomic properties? Atomic size (radius) .
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What are the periodic trends in atomic properties? Ionization energy Ionization energy ( I ) is the energy required to completely remove an electrons a gaseous atom (or ion). The first ionization energy ( I 1 ) is the energy required to remove the outermost electron from a gaseous atom: atom (g) ion + (g) + e Energy required = I 1 > 0 Successive ionization energies ( I 2 , I
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7 - Chem 6A Presentation #7 Overview Chapter 1: The Quantum...

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