hydrogen
H
lithium
Li
helium
He
boron
B
carbon
C
nitrogen
N
oxygen
O
fluorine
F
neon
Ne
sodium
Na
magnesium
Mg
aluminum
Al
silicon
Si
phosphorous
P
sulfur
S
chlorine
Cl
argon
Ar
potassium
K
calcium
Ca
iodine
I
gold
Au
manganese
Mn
iron
Fe
mercury
Hg
nickel
Ni
copper
Cu
zinc
Zn
lead
Pb
bromine
Br
silver
Ag