b
boron
c
carbon
f
fluorine
h
hydrogen
i
iodine
n
nitrogen
o
oxygen
p
phosphorus
s
sulfur
u
uranium
as
arsenic
cd
cadmium
cs
cesium
cl
chlorine
cr
chromium
mg
magnesium
mn
manganese
pt
platinum
rn
radon
sr
strontium
zn
zinc
al
aluminum
ar
argon
ba
barium
be
beryllium
bi
bismuth
br
bromine
ca
calcium
co
cobalt
fr
francium
he
helium
kr
krypton
li
lithium
ne
neon
ni
nickel
ra
radium
si
silicon
ti
titanium
xe
xenon
sb
antimony
cu
copper
au
gold
fe
iron
pb
lead
hg
mercury
k
potassium
ag
silver
na
sodium
sn
tin
w
tungsten