Answer
Not different
Work Step by Step
Isotopes of an element differ by number of neutrons and not the number of protons. Hence N-14 and N-15 are isotopes and not different elements.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 2 - Chemical Compounds - Conceptual Exercise 2.4 - Isotopic Abundance - Page 55: a
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