Answer
(a) increase
(b) I
Work Step by Step
(a) We know that the ionization energy of hydrogen increases when the mass of electron is doubled.
(b) The best explanation is statement I.
Physics Technology Update (4th Edition)
by Walker, James S.
Published by
Pearson
ISBN 10:
0-32190-308-0
ISBN 13:
978-0-32190-308-2
Chapter 31 - Atomic Physics - Problems and Conceptual Exercises - Page 1112: 11
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