Quantum Numbers for Zinc’s 3d10 Electrons


Quantum Numbers for Zinc's 3d10 Electrons 

The electron-configuration diagram for zinc is [Ar]4s23d10. The 3 in the 3d10 from the electron-configuration diagram identifies the principal quantum number: n=3. The d in the electron-configuration diagram identifies the azimuthal quantum number (): =2. The values used for identifying each orbital for the d are  m=  -2, -1, 0, +1, +2. Since zinc has five 3d orbitals, containing 10 electrons, each orbital will have two electrons with opposite spin: ms = +½ for an arrow up and ms = -½ for an arrow down. The quantum numbers (n, , m, ms) for the ten electronsorbital-filling are: 3, 2, -2, +½;  3, 2, -1, +½;  3, 2, 0, +½; 3, 2, +1, +½;  3, 2, +2, +½;  3, 2, -2, -½;  3, 2, -1, -½;  3, 2, 0, -½;  3, 2, +1, -½; and,  3, 2, +2, -½. See figure 4.


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