Question

which would be the correct noble gas configuration for aluminum (al)?
ne 3s² 3p¹
ar 3s¹ 3p¹
ne 3p¹
ar 3p¹
ne 2p⁶ 3s² 3p¹

Explanation:

Aluminum has an atomic number of 13. Neon (Ne) is the noble - gas with an atomic number of 10. After filling the electron configuration of neon, the remaining 3 electrons of aluminum are placed in the 3s and 3p orbitals as 3s²3p¹. So the noble - gas configuration of aluminum is [Ne] 3s²3p¹.

Answer:

O [Ne] 3s² 3p¹