Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 8 - Exercises: 52

Answer

Al : It will lose 3 electrons to attain stable configuration Sn : It will lose 4 electrons to attain stable configuration Br : It will gain 1 electron to attain stable configuration Se : It will gain 2 electrons to attain stable configuration

Work Step by Step

The number of valence electrons is determined by the group number of the element. Al : 3 (Group 13 : valence electrons = 13 -10 = 3) - It will lose 3 electrons to attain stable configuration Sn : 4 (Group 14 : valence electrons = 14 -10 = 4) - It will lose 4 electrons to attain stable configuration Br : 7 (Group : valence electrons = 17 -10 = 7) - It will gain 1 electron to attain stable configuration Se : 6 (Group 16 : valence electrons = 16 -10 = 6) - It will gain 2 electrons to attain stable configuration
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