Group 1 (H Li Na K Rb Cs Fr)
s1
Group 2 (Be Mg Ca Sr Ba Ra)
s2
Group 3 (Sc Y La)
d1 s2
Group 4 (Ti Zr Hf)
d2 s2
Group 5 (V Nb* Ta)
d3 s2
Group 6 (Cr* Mo* W)
d4 s2
Group 7 (Mn Tc Re)
d5 s2
Group 8 (Fe Ru* Os)
d6 s2
Group 9 (Co Rh* Ir)
d7 s2
Group 10 (Ni Pd* Pt*)
d8 s2
Group 11 (Cu* Ag* Au*)
d9 s2
Group 12 (Zn Cd Hg)
d10 s2
Group 13 (B Al Ga In Tl)
d10 s2 p1
Group 14 (C Si Ge Sn Pb)
d10 s2 p2
Group 15 (N P As Sb Bi)
d10 s2 p3
Group 16 (O S Se Po Te)
d10 s2 p4
Group 17 (F Cl Br I At)
d10 s2 p5
Group 18 (He Ne Ar Kr Xe Rn)
d10 s2 p6