Answer
First and Second Ionization Energies
Work Step by Step
Since Lithium has one valence electrons, the removal of the 2th electron will result in the removal of an electron from a noble gas which requires a lot of energy.
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 8 - Sections 8.1-8.9 - Exercises - Problems by Topic - Page 376: 77d
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