4 quantum numbers are used to describe the position and spin of an electron in an atom.
The principal quantum number, n = 2, is used to describe an electron located on the second energy level.
The angular momentum quantum number, l, essentially tells you the subshell in which the electron resides.
the value
l = 1 means that your electron is located in the p-subshell, more specifically, in the 2p-subshell.