A neutral aluminum atom has 13 electrons. However, an aluminum ion has a greater or fewer number of electrons, and is therefore positively or negatively charged.
In the electron configuration of aluminum, the 3p1 electron corresponds to the 3rd energy level (n=3) and is in the p subshell. The second quantum number, also known as the azimuthal quantum number (l), for a p subshell is 1. Therefore, the second quantum number of the 3p1 electron in aluminum is l = 1.
ms = +1/2
The electron configuration for aluminum atoms, which is 1s22s22p63s23p1.
The electron configuration of aluminum (atomic number 13) can be specified in three ways: the full electron configuration, the noble gas shorthand, and the orbital diagram. The full electron configuration is 1s² 2s² 2p⁶ 3s² 3p¹. The noble gas shorthand notation is [Ne] 3s² 3p¹, where [Ne] represents the electron configuration of neon, the nearest noble gas preceding aluminum. Lastly, an orbital diagram visually represents the distribution of electrons in the various orbitals.
For the electron configuration of aluminum see the link below.
Aluminum has 3 valence electrons
In the electron configuration of aluminum, the 3p1 electron corresponds to the 3rd energy level (n=3) and is in the p subshell. The second quantum number, also known as the azimuthal quantum number (l), for a p subshell is 1. Therefore, the second quantum number of the 3p1 electron in aluminum is l = 1.
ms = +1/2
The electron configuration for aluminum atoms, which is 1s22s22p63s23p1.
The first quantum number is the principal quantum number, denoted by "n." In aluminum, the 3p1 electron would have a principal quantum number of n = 3, since it is in the third energy level orbiting the nucleus.
n = 3
The electronic configuration for aluminum is 1s22s22p63s23p1 .
Aluminum has a valency of 3, its maximum oxidation number is 3. Nearly all of its compounds have Al with oxidation number +3.
The electron configuration of aluminum in the excited state is 1s2 2s2 2p6 3s2 3p1. In its ground state, aluminum has an electron configuration of 1s2 2s2 2p6 3s2 3p1. By exciting an electron to a higher energy level, such as from 3p1 to 3s1, the electron configuration changes in the excited state.
The oxidation number of aluminum is typically +3, as it tends to lose its 3 valence electrons to achieve a stable electron configuration.
The principal quantum number n = 3 and the azimuthal or orbital angular momentum quantum number would be l =1 .l = 1
The electron configuration of aluminum is [Ne]3s23p1.