Answer
a). Yttrium- 39
b). Nitrogen- 7
c). Neon- 10
d). Potassium- 19
e). Molybdenum- 42
Work Step by Step
All of these can be found on the periodic table.
Introductory Chemistry (5th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
032191029X
ISBN 13:
978-0-32191-029-5
Chapter 4 - Atoms and Elements - Exercises - Problems - Page 121: 48
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