lect_27dec3f08

lect_27dec3f08 - Outline 27 3-DEC-2008 Reviewe- Configs &...

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1 Outline 27 3-DEC-2008 1. Review- e - Configs & Diagrams, atoms & ions magnetism, Ex: 1. Property Trends A. Size B. Ionization energy C. Electron Affinity 3. Chemical Property Trends metallic behavior
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2 Ion e - configuration; Review Write condensed e - configuration and orbital Diagram for Fe +3 . Comment on magnetic property. For Fe have [Ar] 4s 2 3d 6 . Chalk
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3 Review; Summary: “Rules to use”- 1. Number electrons is Z, atomic #. 2. Energy sequence for filling orbitals. Use PT. Use Aufbau Prinzip (building up principle) “Ground state” means lowest energy. 3. Number of electrons to put “in” orbital. Use Pauli Exclusion Principle. 4. Detailed distribution of electrons in given sub- shell set. Use Hund’s Rule.
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4 valence electrons - electrons in outermost shell - outside “noble gas core”. Configurations and Periodic Table These are electrons primarily involved in chemical reactions. Elements in given group have same “valence shell configuration.” Explains similarity of chemical properties among groups of elements.
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5 Elements in group have similar configurations. Configurations and Periodic Table
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This note was uploaded on 02/18/2009 for the course CHEM 1A taught by Professor Okamura during the Fall '08 term at UC Riverside.

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lect_27dec3f08 - Outline 27 3-DEC-2008 Reviewe- Configs &...

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