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all the elements from top to bottom
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StudyStack
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50 Elements and their symbols and def.- dh
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StudyStack
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BIO205 - Ch 2 - Chemical Principles - RioSalado - AZ
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StudyStack
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A video demonstration of Ionization Energy and Periodic Table Trends from Salman Khan of Khan Academy.
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Khan Academy
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An interactive table of elements.
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Dayah
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Printable study cards (.pdf format) covering the periodic table: periodic trends, ionization energy, history.
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Chemmybear.com, Paul Groves of South Pasadena High School
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An explanation of what valence electrons are and how they relate to the periodic table.
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Clackamas Community College Science Department
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Comprehensive and detailed explanations of how quantum numbers work, complete with pictures of orbitals, and diagrams illustrating the order of filling subshells.
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The Chemogenesis Web Book
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Chapter 6 - Standard Esthetics
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StudyStack
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