Explain the electron configuration of aluminum

Reference no: EM13205475

Considering the electron configuration of aluminum, 1s2s^22p^63s^23p^1, which of the following represents the valence electrons only:

a. 1s^2

b. 1s^22s^2

c. 1s^22s^22p^6

d. 1s^22s^22p^63s^2

e. 3s^23p^1

Reference no: EM13205475

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