H
hydrogen
B
boron
C
carbon
N
nitrogen
H
hydrogen
B
boron
P
Phosphorus
C
Carbon
N
nitrogen
O
oxygen
F
fluorine
S
sulfur
K
potassium
I
iodine
He
Helium
Na
sodium
Ni
nickel
Mg
magnesium
Al
aluminum
Cl
chlorine
Ca
calcium
Fe
iron
Cu
copper
Br
Bromine
Ag
silver
Au
gold
Li
lithium
Co
cobalt
Si
silicon
Hg
mercury
Zn
zinc