Plz help me with this: Write the complete electron configuration, short hand electron configuration, and the orbital diagram. For the orbital diagram, use "u" for "upward arrow" and "d" for "downward arrow".
1) H
2) Ni
3) N
4) I and I^-1
5) Ca and Ca^+2
6) C
7) O and O^-2
8) Co
9) Ag and Ag^+1
10) Ar

We are to write the orbital notation and electronic configuration of sulfur and iron.

The orbital notation shows the filling of electrons into orbitals or sublevels.

Electron configuration  shows the distribution of electrons into shells;

       Number of electrons     Electron configuration     Orbital notation

S                  16                                   2 8 6                      1s² 2s² 2p⁶ 3s² 3p⁴

Fe                26                                2, 8, 14 2           1s² 2s² 2p⁶ 3s² 3p⁶3d⁶4s²        

Explanation: