The periodic Table
coloured by Discovery
coloured by States
Constants, Astronomy
Constants, Physics
SI Units
by Peder Axensten

Periodic Table by Discovery

The idea of the periodic table of elements was put forward in 1871 by Dmitrij Mendeleev (1834-1907).
by Peder Axensten, suggestions and corrections are welcome!

by Year

prehist. 1250-1749 1700-1799 1800-1849 1850-1899 1900-2000 not yet
 
Group:  1 2 3 4 5 6 7 8 9101112 13141516 1718
Period 1A2A3B4B5B6B7B 8B 1B2B3A4A5A6A7A 8A
1 1
H
1766


 
2
He
1895
2 3
Li
1817
4
Be
1828


 
5
B
1808
6
C
prehist.
7
N
1772
8
O
1774
9
F
1886
10
Ne
1898
3 11
Na
1807
12
Mg
1808


 
13
Al
1825
14
Si
1824
15
P
1669
16
S
prehist.
17
Cl
1774
18
Ar
1894
4 19
K
1807
20
Ca
1808
21
Sc
1879
22
Ti
1791
23
V
1801
24
Cr
1780
25
Mn
1774
26
Fe
prehist.
27
Co
1735
28
Ni
1751
29
Cu
prehist.
30
Zn
1500
31
Ga
1875
32
Ge
1886
33
As
1250
34
Se
1817
35
Br
1826
36
Kr
1898
5 37
Rb
1861
38
Sr
1808
39
Y
1794
40
Zr
1789
41
Nb
1801
42
Mo
1781
43
Tc
1937
44
Ru
1808
45
Rh
1803
46
Pd
1803
47
Ag
prehist.
48
Cd
1817
49
In
1863
50
Sn
prehist.
51
Sb
prehist.
52
Te
1783
53
I
1811
54
Xe
1898
6 55
Cs
1860
56
Ba
1808

*
 
72
Hf
1923
73
Ta
1802
74
W
1783
75
Re
1925
76
Os
1803
77
Ir
1803
78
Pt
1400
79
Au
prehist.
80
Hg
prehist.
81
Tl
1861
82
Pb
prehist.
83
Bi
1400
84
Po
1898
85
At
1940
86
Rn
1900
7 87
Fr
1939
88
Ra
1898

**
 
104
Unq
1964
105
Unp
1970
106
Unh
1974
107
Uns
1981
108
Uno
1984
109
Une
1982
110
Uun
 
111
Uuu
 
112
Uub
 
113
Uut
 
114
Uuq
 
115
Uup
 
116
Uuh
 
117
Uus
 
118
Uuo
 
 
*Lanthanides:  57
La
1839
58
Ce
1803
59
Pr
1885
60
Nd
1885
61
Pm
1945
62
Sm
1879
63
Eu
1901
64
Gd
1880
65
Tb
1843
66
Dy
1886
67
Ho
1878
68
Er
1842
69
Tm
1879
70
Yb
1878
71
Lu
1907
**Actinides:  89
Ac
1899
90
Th
1815
91
Pa
1917
92
U
1789
93
Np
1940
94
Pu
1940
95
Am
1944
96
Cm
1944
97
Bk
1949
98
Cf
1950
99
Es
1952
100
Fm
1952
101
Md
1955
102
No
1958
103
Lr
1961
 

by Place

Scandinavia Europe UK USA (other) (no data)
 
Group:  1 2 3 4 5 6 7 8 9101112 13141516 1718
Period 1A2A3B4B5B6B7B 8B 1B2B3A4A5A6A7A 8A
1 1
H
England



 
2
He
England, Sweden
2 3
Li
Sweden
4
Be
Germany, France



 
5
B
England, France
6
C

 
7
N
Scottland
8
O
Sweden, England
9
F
France
10
Ne
England
3 11
Na
England
12
Mg
England



 
13
Al
Denmark
14
Si
Sweden
15
P
Germany
16
S

 
17
Cl
Sweden
18
Ar
England
4 19
K
England
20
Ca
England
21
Sc
Sweden
22
Ti
England
23
V
Mexico
24
Cr
France
25
Mn
Sweden
26
Fe

 
27
Co
Sweden
28
Ni
Sweden
29
Cu

 
30
Zn

 
31
Ga
France
32
Ge
Germany
33
As

 
34
Se
Sweden
35
Br
Germany, France
36
Kr
England
5 37
Rb
Germany
38
Sr
England
39
Y
Finland
40
Zr
Germany
41
Nb
England
42
Mo
Sweden
43
Tc
Italy
44
Ru
Lithuania
45
Rh
England
46
Pd
England
47
Ag

 
48
Cd
Germany
49
In
Germany
50
Sn

 
51
Sb

 
52
Te
Transyl.
53
I
France
54
Xe
England
6 55
Cs
Germany
56
Ba
England

*

 
72
Hf
Denmark
73
Ta
Sweden
74
W
Spain
75
Re
Germany
76
Os
England
77
Ir
England
78
Pt

 
79
Au

 
80
Hg

 
81
Tl
England
82
Pb

 
83
Bi

 
84
Po
France
85
At
USA
86
Rn
Germany
7 87
Fr
France
88
Ra
France

**

 
104
Unq
SSSR
105
Unp
USA, SSSR
106
Unh
USA, SSSR
107
Uns
Germany
108
Uno
Germany
109
Une
Germany
110
Uun

 
111
Uuu

 
112
Uub

 
113
Uut

 
114
Uuq

 
115
Uup

 
116
Uuh

 
117
Uus

 
118
Uuo

 
 
*Lanthanides:  57
La
Sweden
58
Ce
Sweden
59
Pr
Austria
60
Nd
Austria
61
Pm
USA
62
Sm
France
63
Eu
France
64
Gd
Switz.
65
Tb
Sweden
66
Dy
France
67
Ho
Switz.
68
Er
Sweden
69
Tm
Sweden
70
Yb
Switz.
71
Lu
France, USA
**Actinides:  89
Ac
France
90
Th
Sweden
91
Pa
Germany
92
U
Germany
93
Np
USA
94
Pu
USA
95
Am
USA
96
Cm
USA
97
Bk
USA
98
Cf
USA
99
Es
USA
100
Fm
USA
101
Md
USA
102
No
USA
103
Lr
USA