?

AP® Chemistry

Free Version

Upgrade subject to access all content

Moderate

Electron Configuration, Periodic Families

APCHEM-TN0SGN

Which of the following choices shows the ground state electron configuration of a halogen?

A

$1s^22s^22p^63s^23p^5$

B

$1s^22s^22p^63s^23p^6$

C

$1s^22s^22p^62d^{10}3s^23p^5$

D

$1s^22s^22p^63s^23p^63d^{10}$