40 elements
Aluminum
Al
Barium
Ba
Cadmium
Cd
Fluorine
F
Helium
He
Iron
Fe
Magnesium
Mg
Nickle
Ni
Potassium
K
Sulfur
S
Argon
Ar
Boron
B
Carbon
C
Cobalt
Co
Copper
Cu
Lead
Pb
Manganese
Mn
Neon
Ne
Oxygen
O
Silicon
Si
Arsenic
As
Bromine
Br
Chlorine
Cl
Chromium
Cr
Gold
Au
Hydrogen
H
Iodine
I
Lithium
Li
Nitrogen
N
Phosphorus
P
Beryllium
Be
Calcium
Ca
Cesium
Cs
Mercury
Hg
Platinum
Pt
Silver
Ag
Sodium
Na
Strontium
Sr
Tin
Sn
Zinc
Zn