Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 4 - Atomic Structure - 4 Assessment: 68

Answer

Thomson conclude that cathode rays were negatively charged particles because they were attracted to the positively charged plate and it deflected when placed in a magnetic field.

Work Step by Step

Thomson conclude that cathode rays were negatively charged particles because he observed that the particle rays were attracted to the positively charged plate and when placed near a magnet (in a magnetic field) it deflected.
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