Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 9 - Electrons in Atoms and the Periodic Table - Exercises - Problems - Page 320: 84

Answer

S $\lt$ Se $\lt$ Sb $\lt$ Pb $\lt$ Cs

Work Step by Step

Atomic size increases as we move from top to bottom and decreases on moving from left to right. S is present up in the periodic table and on the right side as compared to other elements. Thus it has the smallest size. Cs is present on the extreme left and is present down in the table, therefore it has the largest atomic size.
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