Answer
$Se^{2-}$ is a selenide ion.
Work Step by Step
Selenium forms ions similar to sulfur, and $S^{2-}$ is a sulfide ion. Therefore $Se^{2-}$ is a selenide ion.
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 2 - Atoms, Molecules, and Ions - Exercises - Page 77: 2.68b
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