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30 common elements

Carbon C (nm)
Oxygen O (nm)
Aluminum Al (m)
Iron Fe (m)
Potassium K (m)
Sodium Na (m)
Hydrogen H (nm)
Fluorine F (nm)
Iodine I (nm)
Nitrogen N (nm)
Phosphorus P (nm)
Sulfur S (nm)
Uranium U (m)
Silver Ag (m)
Bromine Br (nm)
Calcium Ca (m)
Helium He (nm)
Lithium Li (m)
Neon Ne (nm)
Nickel Ni (m)
Silicon Si (ml)
Chlorine Cl (nm)
Chromium Cr (m)
Magnesium Mg (m)
Zinc Zn (m)
Copper Cu (m)
Gold Au (m)
Tin Sn (m)
Lead Pb (m)
Mercury Hg (m)