Question

Which of the following subshells is represented by the quantum numbers $n$=4 and $l$=1?

• A. $4s$
• B. $4f$
• C. $4d$
• D. $4p$

Answer 1

The correct option is D $4p$

The principle quantum number $n=4$, represents the fourth orbit. A subshell is the set of states defined by a common azimuthal quantum number l, within a shell. The values $l=0,1,2,3$ correspond to the s, p, d, and f shells, respectively. Hence, $n=4$, $l=1$ represents 4p subshell.