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

Question

Quizplus · Accepted Answer

The correct electron state and shell designation is 2p,L (n = 2) shell. The principal quantum number (n) indicates the shell (K for n=1, L for n=2, M for n=3, etc.), and the letter (s, p, d, f) indicates the subshell type, which is determined by the angular momentum quantum number. The 2p subshell exists in the L shell (n=2). Options A, B, C, and E are incorrect because they either pair the wrong type of subshell with a given principal quantum number or propose non-existent subshells (like 1p or 3f within the given principal quantum numbers).

The Only Valid Electron State and Shell Designation Among the Following