Rare card
Principal quantum number
- Value
- 50 W
- Attack
- 251
- Defence
- 201
- Players
- 0
In quantum mechanics, the principal quantum number (n) of an electron in an atom indicates which electron shell or energy level it is in. Its values are natural numbers (1, 2, 3, ...). Hydrogen and Helium, at their lowest energies, have just one electron shell.
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