hydrogen
H
helium
He
lithium
Li
beryllium
Be
boron
B
carbon
C
nitrogen
N
oxygen
O
fluorine
F
neon
Ne
sodium
Na
magnesium
Mg
aluminium
Al
silicon
Si
phosphorus
P
sulfur
S
chlorine
Cl
argon
Ar
iron
Fe
Potassium
K
Calcium
Ca
Scandium
Sc
Titanium
Ti
Vanadium
V
Chromium
Cr
Manganese
Mn
Cobalt
Co
Nickel
Ni
Copper
Cu
Zinc
Zn
Gallium
Ga
Germanium
Ge
Arsenic
As
Selenium
Se
Bromine
Br
Argon
Ar