Chemistry and Chemical Reactivity (9th Edition)

by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.

Published by Cengage Learning

ISBN 10: 1133949649

ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions - Page 95g: 112

Answer

38 electrons. Lose 2 electrons. Kr. It would have 36 electrons when it was charged.

Work Step by Step

According to the periodic table and $Z=e^-$ for neutral atoms, there are 38 electrons. Since Sr is from group 2A, it would lose two electrons, which would make its electronic structure similar to that of Krypton (Kr), the noble gas from the previous period.

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