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The top documents tagged [viiia elements]
(L5)the periodic table
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PERIODICITY Guys, Groups, Trends, Creations Guys
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1 Chapter 3: Atoms & Elements Mixtures & Pure Substances Elements & Symbols The Periodic Table Atomic Structure Isotopes Electron Energy Levels
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CHAPTER 6
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1. 2 About 70 elements had been discovered by the mid-1800’s, but no one had found a way to relate the elements in a systematic, logical way
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Chapter 6
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