Question

Here principal quantum number, n= 2, azimuthal number,l= 0, magnetic quantum number, m= 0 and electron spin quantum number, ml= +1/2. Is it a correct set of quantum numbers for the unpaired electron of F atom?

Answer 1

we know that electronic configuration of F is 1s² 2s² 2p⁵

the unpaired electron belongs to 2nd shell so n = 2

the unpaired electron is in the p subshell and for p we know that l = 1

we know that magnetic quantum number is given by 2l + 1

for p subshell l = 1 that implies 2 + 1 = 3. .they are -1 (px) , 0 (py) , +1 (pz)

the unpaired electron belongs to the orbital (pz) so m = 1

as the unpaired electron is filled the first its spin is +1/2

so the set of values of 4 quantum numbers of unpaired electron are

n = 2 , l = 1 , m = +1 and ml= +1/2

so the answer is the given set is not the correct set of quantum numbers for the unpaired electron of F atom.