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Identify the seventh and thirteenth electrons of aluminum using only their quantum numbers. 7 th_____________________________ 13th ________________________________

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Electron configuration of aluminium: ₁₃Al 1s²2s²2p⁶3s²3p¹.
1) 7th electron is in 2p orbital:
principal quantum number n = 2.
azimuthal quantum number l = 1.
magnetic quantum number m = +1.
spin quantum number s = +1/2.
2) 13th electron is in 3p orbital:
principal quantum number n = 3.
azimuthal quantum number l = 1.
magnetic quantum number m = -1.
spin quantum number s = +1/2.

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