Hydrogen
H
Lithium
Li
Sodium
Na
Potassium
K
Magnesium
Mg
Calcium
Ca
Iron
Fe
Copper
Cu
Zinc
Zn
Carbon
C
Nitrogen
N
Phosphorus
P
Oxygen
O
Sulfur
S
Fluorine
F
Chlorine
Cl
Bromine
Br
Iodine
I
Helium
He
Neon
Ne
Strontium
Sr
Barium
Ba
Titanium
Ti
Chromium
Cr