11 Sodium Na
12 Magnesium Mg
14 Silicon Si
15 Phosphorus P
16 Sulfur S
17 Chlorine Cl
19 Potassium K
20 Calcium Ca
22 Titanium Ti
23 Vanadium V
24 Chromium Cr
25 Manganese Mn
26 Iron Fe
27 Cobalt Co
28 Nickel Ni
29 Copper Cu
30 Zinc Zn
33 Arsenic As
34 Selenium Se
35 Bromine Br
38 Strontium Sr
40 Zirconium Zr
45 Rhodium Rh
