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Moderate

Electron Configuration, Ions

APCHEM-L1AFEG

Which of the following is the CORRECT electron configuration for the potassium ion ($K^{+}$)?

A

$1s^22s^22p^63s^23p^64s^1$

B

$1s^22s^22p^63s^23p^64s^2$

C

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

D

$1s^22s^22p^6$