| Quantum Number |
Symbol |
Characteristic specified |
Information provided |
Possible values |
| Principle quantum number |
n |
Shell |
Average distance from nucleus (r) |
1, 2, 3, 4, ... |
| Angular momentum (Azimuthal) quantum number |
l |
Subshell |
Shape of orbital |
0, 1, 2, 3, ...n - 1 |
| Magnetic quantum number |
ml |
Orbital |
Orientation of orbital |
- l ... 0 ... +l |
| Spin quantum number |
ms |
Electron spin |
Spin direction |
± 1/2 |
|
