Question

magnetic quantum number for valence electron of sodium is?

Answer 1

sodium=1s2 2s2 2p6 3s1
Hence, 3s1 has 1 azimuthal no. therefore
magnetic qunatum no. of sodium is 1 i. e., 0

Answer 2

electronic configuration of na (it has11 electron) is 1s^2 2s^2 2p^6 3s^1

here the valence electron in 3s orbitals 3s^1)so the orbital the | value of this s orbital is 0.so the magnetic quantum number Will be +| to -| and for zero |value is only 0