Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 7 The Structure of Atoms and Periodic Trends - Study Questions - Page 281c: 57


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Work Step by Step

a) Outermost shell is 4, fourth period; 9 electrons past the noble gas core: group 9 It's cobalt, Co. b) Since it has three unpaired electrons, it's paramagnetic. c) 4, it loses the two electrons in the 4s subshell and one in the second 3d orbital.
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