A
H
Hydrogen
Ca
Calcium
Zn
Zinc
O
Oxygen
C
Carbon
Mg
Magnesium
Cl
Chlorine
Ni
Nickle
Si
Silicon
I
Iodine
S
Sulfur
He
Helium
U
Uranium
Al
Aluminum
P
Nitrogen
Au
Gold
K
Potassium
Cu
Copper
Fe
Iron
Hg
Mercury
Na
Sodium
Pb
Lead
Ag
Silver
Sn
Tin