Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 8 - Covalent Bonding - 8 Assessment - Page 260: 110



Work Step by Step

(I) is incorrect because elements are arranged in order of increasing atomic number. (II) is correct because a period is indeed a horizontal row, whereas a group is a vertical row. (III) is correct because nonmetals are located to the right of the heavy stair-step line separating the metals from the nonmetals. Therefore (e) is the correct answer.
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