Fluorine
F
Sulfur
S
Titanium
Ti
Cu
Copper
Arsenic
As
Strontium
Sr
Sodium
Na
Phosphorus
P
Potassium
K
Silver
Ag
Tin
Sn
Antimony
Sb
Tungsten
W
Iridium
Ir
Gold
Au
Astatine
At
Radon
Rn
Mercury
Hg
Lead
Pb
Iron
Fe