Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 2 - Atoms, Molecules, and Ions - Additional Exercises - Page 78: 2.96a

Answer

Gallium (Ga), 68.926amu 31 protons, 38 neutrons Gallium (Ga), 70.925amu 31 protons, 40 neutrons

Work Step by Step

For Gallium (Ga), 68.926 amu number of protons = atomic number Gallium (Ga) atomic number is 31, thus number of protons is 31 number of neutrons = mass number - atomic number number of neutrons = 68.926 - 31 number of neutrons = 37.926 $\approx$ 38 For Gallium (Ga), 70.925 amu number of protons = atomic number Gallium (Ga) atomic number is 31, thus number of protons is 31 number of neutrons = mass number - atomic number number of neutrons = 70.925 - 31 number of neutrons = 39.925 $\approx$ 40
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