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Lec-04-Chap-02-1 - CHE 131 Lecture 4 Atoms Lecture...

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CHE 131 Lecture 4, 1/30/2006 1 Atoms Lecture four (Chapter two) Benjamin S. Hsiao Department of Chemistry Stony Brook University Atomic Structure Electrical charges of the same type repel one another, and charges of the opposite type attract one another. J.J. Thompson (1856-1940) English physicist At the turn of the century, Thompson experimented with what he called a cathode-ray tube. He found that the beam was made up of negatively charged particles, now called electrons. 1600 1700 1800 1900 2000 Radioactivity
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