Answer
Selenide, Se-2;
Bromide, Br-1;
Rubidium cation, Rb+1
Work Step by Step
All isoelectronic to krypton; that is they all have 36 electrons.
Chemistry (12th Edition)
by Wilbraham
Published by
Prentice Hall
ISBN 10:
0132525763
ISBN 13:
978-0-13252-576-3
Chapter 6 - The Periodic Table - 6 Assessment - Page 189: 78
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