Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 19 - Nuclear Chemistry - Questions & Problems - Page 892: 19.3

Answer

A positron is the antimatter counterpart of an electron (also called anti-electron). They have the same mass $9.1*10^{-31}$ They both have the same spin 1/2

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