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He
helium
B
boron
C
carbon
N
nitrogen
O
oxygen
F
fluorine
Ne
neon
Si
silicon
P
phosphorus
S
sulfar
Cl
chlorine
Ar
argon
As
arsenic
Se
selenium
Br
bromine
Kr
krypton
Te
tellurium
I
iodine
Xe
xenon
At
astatine
Rn
radon
h
hydrogen
li
lithium
be
beryllium
na
sodium
mg
magnesium
k
potassium
ca
calcium
rb
rubidium
sr
stronfium
cs
cesium
ba
barium
fr
francium
ra
radium
sc
scandium
ti
titanium
v
vanadium
cr
chromium
mn
manganese
fe
iron
co
cobalt
y
yttrium
zr
zirconium
nb
niobium
mo
molybdenum
tc
technetium
ru
ruthenium
rh
rhodium
la
lanthanum
hf
hafnium
ta
tantalum
w
tungsten
re
rhenium
os
osmium
ir
iridium
ac
actinium
rf
rutherfordium
db
dubnium
sg
seaborgium
bh
bohrium
hs
hassium
mt
meitnerium
ni
nickel
cu
copper
zn
zinc
ga
gallium
ge
germanium
pd
palladium
ag
silver
cd
cadmium
in
indium
sn
tin
sb
antimony
pt
platinum
au
gold
hg
mercury
tl
thallium
pb
lead
bi
bismuth
po
polonium
al
aluminium
Ce
cerium
Pr
Praseodymium
Nd
Neodymium
Pm
Promethium
Sm
Samarium
Eu
Europium
Gd
Gadolinium
Tb
Terbium
Dy
Dysprosium
Ho
Holmium
Er
Erbium
Tm
Thulium
Yb
Ytterbium
Lu
Lutetium
Th
thorium
Pa
protactinium
U
Uranium
Np
neptunium
Pu
Plutonium