Plutonium
Pu

Hydrogen
H
Helium
He
Lithium
Li
Beryllium
Be

Boron
B
Carbon
C
Nitrogen
N
Oxygen
O
Fluorine
F
Neon
Ne
Sodium
Na
Magnesium
Mg

Aluminum
Al
Silicon
Si
Phosphorus
P
Sulfur
S
Chlorine
Cl
Argon
Ar
Potassium
K
Calcium
Ca
Titanium
Ti
Chromium
Cr
Manganese
Mn
