The only VALID electron state and shell designation among the following is
A) 1p, K.
B) 2s, K.
C) 1s, L.
D) 2p, L.
E) 3f, M.

Question

Quizplus · Accepted Answer

The correct electron state and shell designation is 2p, L. The principal quantum number (n) indicates the shell (n=1 is K, n=2 is L, etc.), and the azimuthal quantum number (l) indicates the subshell (s, p, d, f for l=0, 1, 2, 3, respectively). For option D, n=2 corresponds to the L shell, and p (l=1) is a valid subshell for n=2.

The Only VALID Electron State and Shell Designation Among the Following