Which is the correct electron configuration for aluminum?A1s22s22p63s3B1s22s21p63s22p1C1s22s22p63s13p2D1s22s22p63s23p1
Question
Which is the correct electron configuration for aluminum?
A) 1s² 2s² 2p⁶ 3s³
B) 1s² 2s² 1p⁶ 3s² 2p¹
C) 1s² 2s² 2p⁶ 3s¹ 3p²
D) 1s² 2s² 2p⁶ 3s² 3p¹
Solution
The correct electron configuration for aluminum is D1s22s22p63s23p1.
Here's why:
- The atomic number of aluminum is 13, which means it has 13 electrons in its neutral state.
- The first two electrons will fill the 1s orbital. So we have 1s2.
- The next two electrons will fill the 2s orbital. So we have 1s22s2.
- The next six electrons will fill the 2p orbital. So we have 1s22s22p6.
- The next two electrons will fill the 3s orbital. So we have 1s22s22p63s2.
- The remaining one electron will fill the 3p orbital. So we have 1s22s22p63s23p1.
So, the correct answer is D1s22s22p63s23p1.
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