N shell can have a maximum of 32 electrons.
Fourth or N shell has 2 x (4) 2 = 32 electrons
The principal quantum number determines the maximum number of electrons that can be accommodated in a shell (n). The shell number is expressed by the formula 2n2, where n is the number of shells. The shells, values of n, and the total number of electrons that can be accommodated are tabulated below.
|Shell and ‘n’ value||Maximum electrons in the electron configuration|
|K shell, n=1||2 ✕ 12 = 2|
|L shell, n=2||2 ✕ 22 = 8|
|M shell, n=3||2 ✕ 32 = 18|
|N shell, n=4||2 ✕ 42 = 32|