Chemistry (12th Edition)

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

Chapter 6 - The Periodic Table - 6 Assessment - Page 186: 45


a.Ca or O b. O or F c. H or O d. K or S

Work Step by Step

a. This question is really asking which element in each pair has the highest electronegativity value. Electronegativity generally increases when moving across a period from left to right and decreases when moving down a period. In this case, Oxygen is both to the right and above calcium. Therefore oxygen would have a greater attraction of electrons. b. Fluorine is to the right of oxygen (fluorine has also the highest electronegativity value in the whole table), so it is definitely attracting electrons with a greater force. c. Oxygen would attract electrons with a greater force because it has a greater electronegativity value (3.5) than that of hydrogen (2.1). d. Sulfur is both to the right and above potassium. Therefore sulfur would have a greater attraction of electrons.
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