Question

write down the value of all four quantum numbers for the last electron of Fe ( Z = 26 )​

Answer 1

Answer:

4,0,0,-1/2

Explanation:

Fe( Z=26) So, the number of electrons of Fe is 26.

electronic configuration of it- [Ar]3d6 4s2

So, the last shell is 4s

Therefore, the principal quantum number(n) = 4

azimuthal quantum number(l)= 0, as l value of any s electron=0

Magnetic quantum number(m)= 0

Spin quantum number (s)= -1/2 as, when the first electron enters in a shell s value we take as +1/2. Here, we have to take the last one. So the s value will be -1/2