General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 2 - Atoms, Molecules, and Ions - Questions and Problems - Page 81: 2.33

Answer

38 electrons

Work Step by Step

As we know that the potassium atom has an atomic mass 39, so it has 19 protons and 20 neutrons. If the charge of the proton is doubled then it will need twice number of electrons i.e 38 electrons to maintain its electrically neutral state.
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