Iodine
I
Phosphorus
P
Boron
B
Silicon
Si
Copper
Cu
Arsenic
As
Calcium
Ca
Bromine
Br
Carbon
C
Oxygen
O
Helium
He
Argon
Ar
Cesium
Cs
Cobalt
Co
Neon
Ne
Zinc
ZnN
Nickel
Ni
Chlorine
CI
Krypton
Kr
Lithium
Li
Gold
Au
Silver
Ag
Mercury
Hg
Sulfur
S
Uranium
U
Lead
Pb
Nitrogen
N
Tin
Sn
Hydrogen
H
Chromium
Cr
Potassium
K
Fluorine
F
Sodium
Na
Iron
Fe
Magnesium
Mg