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
Scandium
Sc
Titanium
Ti
Vanadium
V
Chromium
Cr
Maganese
Mn
iron
Fe
Cobalt
Co