Enumeration ShellModel

Letter designations for the principal electron shells of an atom.

Enumeration Members

K: "k"

The innermost electron shell (n=1).

L: "l"

The second electron shell (n=2).

M: "m"

The third electron shell (n=3).

N: "n"

The fourth electron shell (n=4).

O: "o"

The fifth electron shell (n=5).

P: "p"

The sixth electron shell (n=6).

Q: "q"

The seventh electron shell (n=7).