Answer
$[Kr]4d^{6}$
Work Step by Step
Ru loes 1 electron form 5s and 1 electron from 4d orbitsl to obtain +2 state
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 23 - Transition Metals and Coordination Chemistry - Exercises - Page 1033: 23.15b
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