H2
hydrogen
He
helium
Li
lithium
Be
beryllium
B
boron
C
carbon
N2
nitrogen
O2
oxygen
F2
fluorine
Ne
neon
Na
sodium
Mg
magenisium
Al
aluminum
Si
silicone
P
phosphorus
S
sulfur
Cl2
chlorine
Ar
argon
K
potassium
Ca
calcium
Cr
chromium
Mn
manganese
Fe
iron
Co
cobalt