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H (1)
hydrogen
He (2)
helium
Li (3)
lithium
Be (4)
beryllium
B (5)
boron
C (6)
carbon
N (7)
nitrogen
O (8)
oxygen
F (9)
fluorine
Ne (10)
neon
Na (11)
sodium
Mg (12)
magnesium
Al (13)
aluminum
Si (14)
silicon
P (15)
phosphorus
S (16)
sulfur
Cl (17)
chlorine
Ar (18)
argon
K (19)
potassium
Ca (20)
calcium
Cr (24)
chromium
Mn (25)
manganese
Fe (26)
iron
Co (27)
cobalt
Ni (28)
nickel
Cu (29)
copper
Zn (30)
zinc
Ga (31)
gallium
Ge (32)
germanium
As (33)
arsenic
Se (34)
selenium
Br (35)
bromine
Kr (36)
krypton
Rb (37)
rubidium
Sr (38)
strontium
Pd (46)
palladium
Ag (47)
silver
Cd (48)
cadmium
Sn (50)
tin
I (53)
iodine
Xe (54)
xenon
Cs (55)
cesium
Ba (56)
barium
Pt (78)
platinum
Au (79)
gold
Hg (80)
mercury
Pb (82)
lead
Rn (86)
radon
Fr (87)
francium
Ra (88)
radium
U (92)
uranium