Rules For Filling Electrons In Orbitals Notes For NCERT Chemistry Class 11 For L- orbit, n = 2, l can have two values (= 0 and 1 which corresponds to s and p sub shells respectively), m will have three values (=-1, 0, +1) which corresponds to three orbitals of p sub shell and s can have two values +1/2 or -1/2. From this information, following combination will be obtained: n = 2; l = 0; m = 0; s = +1/2 n = 2; l = 0; m = 0; s = -1/2 n = 2; l = 1; m = -1; s = +1/2 n = 2; l = 1; m = 0; s = +1/2 n = 2; l = 1; m =+1; s = +1/2 n = 2; l = 1; m = -1; s = -1/2 n = 2; l = 1; m = 0; s = -1/2 n = 2; l = 1; m =+1; s = -1/2 Therefore, L orbit where n = 2 can accommodate total of eight electrons, two in s sub shell and six in p sub shell. Likewise, the M orbit with n = 3 can accommodate 18 electrons; 2 in s sub shell ( l = 0), 6 in p sub shell ( l = 1) and 10 in d sub shell ( l = 2). As we pass from on
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