Answer
$ClO_{4}^{-}$. In this ion Cl has oxidation state of +7. It forms 4 sigma bonds with 4 oxygen ions and 3 pi bonds with 3 of the 4 oxygen atoms.
Work Step by Step
Given above.
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 22 - Chemistry of the Nonmetals - Exercises - Page 992: 22.33d
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