#### Answer

A and C are allowed, B is not.

#### Work Step by Step

If an atom is in an excited state, configurations A and C could occur.
Choice B is never allowed because it has 8 electrons in the 2p state, and no more than 6 are allowed.

Published by
Pearson

ISBN 10:
0-32162-592-7

ISBN 13:
978-0-32162-592-2

A and C are allowed, B is not.

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