Answer
The correct answer is (b).
Work Step by Step
Selenium has 34 electrons. Filling these electrons in the orbital sequentially, we get the configuration as :
$1s^22s^22p^63s^23p^64s^23d^{10}4p^4$
So, the correct answer is (b).
Chemistry: Molecular Approach (4th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
0134112830
ISBN 13:
978-0-13411-283-1
Chapter 8 - Self-Assessment Quiz - Page 372: Q3
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