Answer
$1s^2 2s^2 2p^6 3s^2 3p^6 3d^8 4s^2$
Work Step by Step
As the atomic number of nickle is $28$, hence there are 28 electrons. The electronic configuration of Nickle is given as $1s^2 2s^2 2p^6 3s^2 3p^6 3d^8 4s^2$.
Physics Technology Update (4th Edition)
by Walker, James S.
Published by
Pearson
ISBN 10:
0-32190-308-0
ISBN 13:
978-0-32190-308-2
Chapter 31 - Atomic Physics - Problems and Conceptual Exercises - Page 1113: 55
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