Tangents
 Created
 20 Jun 2006 
Material on this page is in the Public Domain.
Modified 
 01 Jul 2011 

For the benefit of those who prefer the standard table, below is the Periodic Table of Elements, as redesigned by Dmitri Mendeleev in 1871 (from his original design in 1869) and updated as more chemical elements have become known.

Click here to view this web site's color-coded version of the Periodic Table of Elements.

Periodic Table of Elements
1
Ia
                                18
0
1
H
1.01
2
IIa
                    13
IIIa
14
IVa
15
Va
16
VIa
17
VIIa
2
He
4.00
3
Li
6.94
4
Be
9.01
                    5
B
10.8
6
C
12.0
7
N
14.0
8
O
16.0
9
F
19.0
10
Ne
20.2
11
Na
23.0
12
Mg
24.3
3
IIIb
4
IVb
5
Vb
6
VIb
7
VIIb
8
VIIIb
9
VIIIb
10
VIIIb
11
Ib
12
IIb
13
Al
27.0
14
Si
28.1
15
P
31.0
16
S
32.1
17
Cl
35.5
18
Ar
39.9
19
K
39.1
20
Ca
40.1
21
Sc
45.0
22
Ti
47.9
23
V
50.9
24
Cr
52.0
25
Mn
54.9
26
Fe
55.8
27
Co
58.9
28
Ni
58.7
29
Cu
63.5
30
Zn
65.4
31
Ga
69.7
32
Ge
72.6
33
As
74.9
34
Se
79.0
35
Br
79.9
36
Kr
83.8
37
Rb
85.5
38
Sr
87.6
39
Y
88.9
40
Zr
91.2
41
Nb
92.9
42
Mo
95.9
43
Tc
99
44
Ru
101
45
Rh
103
46
Pd
106
47
Ag
108
48
Cd
112
49
In
115
50
Sn
119
51
Sb
122
52
Te
128
53
I
127
54
Xe
131
55
Cs
133
56
Ba
137
La-
Lu
72
Hf
178
73
Ta
181
74
W
184
75
Re
186
76
Os
190
77
Ir
192
78
Pt
195
79
Au
197
80
Hg
201
81
Tl
204
82
Pb
207
83
Bi
208
84
Po
209
85
At
210
86
Rn
222
87
Fr
223
88
Ra
226
Ac-
Lr
104
Rf
261
105
Db
268
106
Sg
271
107
Bh
270
108
Hs
269
109
Mt
278
110
Ds
281
111
Rg
281
111
Cn
285
           
                                   
  Lanthanide
series
57
La
139
58
Ce
140
59
Pr
141
60
Nd
144
61
Pm
145
62
Sm
150
63
Eu
152
64
Gd
157
65
Tb
159
66
Dy
163
67
Ho
165
68
Er
167
69
Tm
169
70
Yb
173
71
Lu
175
  Actinide
series
89
Ac
227
90
Th
232
91
Pa
231
92
U
238
93
Np
237
94
Pu
244
95
Am
243
96
Cm
247
97
Bk
247
98
Cf
251
99
Es
254
100
Fm
257
101
Md
258
102
No
259
103
Lr
260


Click here to view this website's color-coded version of the Periodic Table of Elements.