Mg
magnesium
K
potassium
phosphorus
P
Cr
chromium
uranium
U
aluminium
Al
He
helium
calcium
Ca
F
fluorine
Ni
nickel
lead
Pb
Fe
iron
copper
Cu
carbon
C
N
nitrogen
silicon
Si
Na
sodium
Li
lithium
sulfur
S
I
iodine
gold
Au
Br
bromine
Cl
chlorine
H
hydrogen