Answer
See the answer below.
Work Step by Step
a) $[Xe]\ 4f^5$
b) $2\ Sm(s)+3/2\ O_2(g)\rightarrow Sm_2O_3(s)$
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 7 The Structure of Atoms and Periodic Trends - 7-6 Periodic Trends and Chemical Properties - Applying Chemical Principles - Page 279: 1
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