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TABLE of ELEMENTS Timelines Element Name, Year Discovered,

ELEMENTs
BCE
.
ELEMENTs
1800
.
ELEMENTs
1900
Gold
?
.
Sodium
07
.
Radon
00
Silver
?
.
Potassium
07
.
Lutetium
07
Copper
?
.
Barium
08
.
Protractinium
17
Iron
?
.
Calcium
08
.
Hafnium
23
Lead
?
.
Magnesium
08
.
Rhenium
23
Tin
?
.
Boron
08
.
Technetium
37
Mercury
?
.
Iodine
11
.
Francium
39
Sulfur
?
.
Lithium
17
.
Astatine
40
Carbon
?
.
Cadmium
17
.
Neptunium
40
.
CE
.
Selenium
17
.
Plutonium
40
Zinc
1250
.
Silicon
24
.
Curnium
44
Arsenic
1250
.
Zirconium
24
.
Americium
44
Antimony
1550
.
Aluminum
27
.
Promethium
45
Phosphorus
1669
.
Bromine
26
.
Berkelium
49
.
1700
.
Thorium
28
.
Californium
50
Cobalt
35
.
Lanthanum
39
.
Fermium
52
Platinum
35
.
Terbium
43
.
Einsteinium
52
Nickel
51
.
Erbium
43
.
Mendelevium
55
Bismuth
53
.
Ruthenium
44
.
Nobelium
58
Hydrogen
66
.
Cesium
60
.
Lawrencium
61
Nitrogen
72
.
Rubidium
61
.
Rutherfordium
64
Oxygen
74
.
Thallium
61
.
Dubnium
67
Chlorine
74
.
Indium
63
.
Seaborgium
74
Manganese
74
.
Fluorine
66
.
Bohrium
75
Molybdenum
78
.
Gallium
75
.
Meitnerium
82
Tellurium
82
.
Ytterbium
78
.
Hassium
84
Tungsten
83
.
Scandium
78
.
Ununnilium
94
Titanium
91
.
Holmium
78
.
Unuminium
94
Yttrium
94
.
Samarium
79
.
Unubium
96
Chromium
97
.
Thulium
79
.
.
.
Beryllium
98
.
Gadolinium
80
.
.
.
.
1800
.
Praseodymium
85
.
.
.
Vanadium
01
.
Neodyium
85
.
.
.
Niobium
01
.
Dysprosium
86
.
.
.
Tantalum
02
.
Germanium
86
.
.
.
Cerium
03
.
Europium
90
.
.
.
Palladium
03
.
Argon
94
.
.
.
Rhodium
03
.
Helium
95
.
.
.
Osmium
03
.
Neon
98
.
.
.
Iridium
03
.
Krypton
98
.
.
.
.
.
.
Polonium
98
.
.
.
.
.
.
Radium
98
.
.
.
.
.
.
Actinium
99
.
.
.
.
.
.
.
.
.
.
.
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ELEMENTs
year
.
ELEMENTs
year
.
ELEMENTs
year
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