Allowed values for the quantum numbers of electrons are as follows: n =1,2,3, … I =0,1,2,3, …, n-1 ml =0, ±1, ±2, ±3, …±I mx = ±(1)/(2) The relationships between n and the shell designations are noted in Table 2.1. Relative to the subshells, 1=0 corresponds to an s subshell l- 1 corresponds to a psubshell l- 2 corresponds to a d subshell l=3 corresponds to an fsubshell For the K shell, the four quantum numbers for each of the two electrons in the 1 s state, in the order of n

Quantum Numbers (Principal, Azimuthal, Magnetic and Spin) - Definition, Detailed Explanation, Videos and FAQs of Quantum Numbers.