Periodic Table
of the Elements
> printable version
[pdf file - 28KB] (version
date 22 June 2007)
- sized to print on A4 and US letter
paper
- including the 2005 revised standard atomic weights of 16 chemical
elements > see
release
-
or see CI tear off version May/June 2006 issue [pdf
file - 68KB]
Earlier versions:
- 3
Oct 2005 [pdf
file - 17KB]
- 4
Feb 2005 [pdf file - 17KB];
CI
tear off Mar/Apr 2005 issue [pdf
file - 87KB]
- 1 Nov 2004 [pdf file - 17KB]
- 7 Nov 2003 [pdf file - 17KB];
CI
tear off Jan/Feb 2004 issue [pdf
file - 474KB]
For a brief historical review of the table, see Chem.
Int. 2004,
Jan , p. 8
Below, each
element is keyed to a color matching the time of its discovery
|
Time
of Discovery
|
Before
1800 |
1800-1849 |
1850-1899 |
1900-1949 |
1950-1999 |
|
| 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
18 |
1
H
1.0079 |
2 |
|
13 |
14 |
15 |
16 |
17 |
2
He
4.0026 |
3
Li
6.941 |
4
Be
9.0122 |
5
B
10.811 |
6
C
12.011 |
7
N
14.007 |
8
O
15.999 |
9
F
18.998 |
10
Ne
20.180 |
11
Na
22.990 |
12
Mg
24.305 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13
Al
26.982 |
14
Si
28.086 |
15
P
30.974 |
16
S
32.065 |
17
Cl
35.453 |
18
Ar
39.948 |
19
K
39.098 |
20
Ca
40.078 |
21
Sc
44.956 |
22
Ti
47.867 |
23
V
50.942 |
24
Cr
51.996 |
25
Mn
54.938 |
26
Fe
55.845 |
27
Co
58.933 |
28
Ni
58.693 |
29
Cu
63.546 |
30
Zn
65.38 |
31
Ga
69.723 |
32
Ge
72.64 |
33
As
74.922
|
34
Se
78.96 |
35
Br
79.904 |
36
Kr
83.798 |
37
Rb
85.468 |
38
Sr
87.62 |
39
Y
88.906 |
40
Zr
91.224 |
41
Nb
92.906 |
42
Mo
95.96 |
43
Tc
- |
44
Ru
101.07 |
45
Rh
102.91 |
46
Pd
106.42 |
47
Ag
107.87 |
48
Cd
112.41 |
49
In
114.82 |
50
Sn
118.71 |
51
Sb
121.76 |
52
Te
127.60 |
53
I
126.90 |
54
Xe
131.29 |
55
Cs
132.91 |
56
Ba
137.33 |
57-71 |
72
Hf
178.49 |
73
Ta
180.95 |
74
W
183.84 |
75
Re
186.21 |
76
Os
190.23 |
77
Ir
192.22 |
78
Pt
195.08 |
79
Au
196.97 |
80
Hg
200.59 |
81
Tl
204.38 |
82
Pb
207.2 |
83
Bi
208.98 |
84
Po
- |
85
At
- |
86
Rn
- |
87
Fr
- |
88
Ra
- |
89-103 |
104
Rf
- |
105
Db
- |
106
Sg
- |
107
Bh
- |
108
Hs
- |
109
Mt
- |
110
Ds
- |
111
Rg
- |
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| La 150.36 |
La 150.36 |
La
150.36
|
57
La
138.91 |
58
Ce
140.12 |
59
Pr
140.91 |
60
Nd
144.24 |
61
Pm
- |
62
Sm
150.36 |
63
Eu
151.96 |
64
Gd
157.25 |
65
Tb
158.93 |
66
Dy
162.50 |
67
Ho
164.93 |
68
Er
167.26 |
69
Tm
168.93 |
70
Yb
173.05 |
71
Lu
174.97 |
| La 150.36 |
La 150.36 |
La
150.36 |
89
Ac
- |
90
Th
232.04 |
91
Pa
231.04 |
92
U
238.03 |
93
Np
- |
94
Pu
- |
95
Am
- |
96
Cm
- |
97
Bk
- |
98
Cf
- |
99
Es
- |
100
Fm
- |
101
Md
- |
102
No
- |
103
Lr
- |
Notes
- Element with atomic numbers 112 and above have been reported but not
fully authenticated; see Pure
Appl. Chem.
75(10), pp. 1601-1611, 2003.
- Standard
atomic weights last revised based on the 2005 review published in
Pure
Appl. Chem.
78(11), 2051-2066, 2006 and Aug
2007 release, and here reported to 5 significant figures. Elements
with no reported values in the table above have no stable nuclides
(alternative tables might display mean relative atomic masses or
mass numbers for an arbitrarily selected unstable nuclide of that
chemical element). However, three such elements -Th, Pa, and U-
have a characteristic terresterial isotopic composition, and for
these an atomic weight is tabulated.
A similar table,
commemorative of IUPAC 80 Years of Service to Chemistry was
produced as a laminated postcard and distributed with the Nov.
2000 issue of Chemistry International
| |
Symbol
|
name
|
|
Symbol
|
name
|
|
Symbol
|
name
|
| |
Ac
|
actinium
|
|
Gd
|
gadolinium
|
|
Po
|
polonium
|
| |
Ag
|
silver*
|
|
Ge
|
germanium
|
|
Pr
|
praseodymium
|
| |
Al
|
aluminium+
|
|
H
|
hydrogen
|
|
Pt
|
platinum
|
| |
Am
|
americium
|
|
He
|
helium
|
|
Pu
|
plutonium
|
| |
Ar
|
argon
|
|
Hf
|
hafnium
|
|
Ra
|
radium
|
| |
As
|
arsenic
|
|
Hg
|
mercury*
|
|
Rb
|
rubidium
|
| |
At
|
astatine
|
|
Ho
|
holmium
|
|
Re
|
rhenium
|
| |
Au
|
gold*
|
|
Hs |
hassium |
|
Rf
|
rutherfordium
|
| |
B
|
boron
|
|
I
|
iodine
|
|
Rg |
roentgenium |
| |
Ba
|
barium
|
|
In
|
indium
|
|
Rh
|
rhodium
|
| |
Be
|
beryllium
|
|
Ir
|
iridium
|
|
Rn
|
radon
|
| |
Bh |
bohrium |
|
K
|
potassium*
|
|
Ru
|
ruthenium
|
| |
Bi
|
bismuth
|
|
Kr
|
krypton
|
|
S
|
sulfur
|
| |
Bk
|
berkelium
|
|
La
|
lanthanum
|
|
Sb
|
antimony*
|
| |
Br
|
bromine
|
|
Li
|
lithium
|
|
Sc
|
scandium
|
| |
C
|
carbon
|
|
Lr
|
lawrencium
|
|
Se
|
selenium
|
| |
Ca
|
calcium
|
|
Lu
|
lutetium
|
|
Sg |
seaborgium |
| |
Cd
|
cadmium
|
|
Md
|
mendelevium
|
|
Si
|
silicon
|
| |
Ce
|
cerium
|
|
Mg
|
magnesium
|
|
Sm
|
samarium
|
| |
Cf
|
californium
|
|
Mn
|
manganese
|
|
Sn
|
tin*
|
| |
Cl
|
chlorine
|
|
Mo
|
molybdenum
|
|
Sr
|
strontium
|
| |
Cm
|
curium
|
|
Mt |
meitnerium |
|
Ta
|
tantalum
|
| |
Co
|
cobalt
|
|
N
|
nitrogen
|
|
Tb
|
terbium
|
| |
Cr
|
chromium
|
|
Na
|
sodium*
|
|
Tc
|
technetium
|
| |
Cs
|
caesium+
|
|
Nb
|
niobium
|
|
Te
|
tellurium
|
| |
Cu
|
copper*
|
|
Nd
|
neodymium
|
|
Th
|
thorium
|
| |
Db |
dubnium |
|
Ne
|
neon
|
|
Ti
|
titanium
|
| |
Ds
|
darmstadtium
|
|
Ni
|
nickel
|
|
Tl
|
thallium
|
| |
Dy
|
dysprosium
|
|
No
|
nobelium
|
|
Tm
|
thulium
|
| |
Er
|
erbium
|
|
Np
|
neptunium
|
|
U
|
uranium
|
| |
Es
|
einsteinium
|
|
O
|
oxygen
|
|
V
|
vanadium
|
| |
Eu
|
europium
|
|
Os
|
osmium
|
|
W
|
tungsten*
|
| |
F
|
fluorine
|
|
P
|
phosphorus
|
|
Xe
|
xenon
|
| |
Fe
|
iron*
|
|
Pa
|
protactinium
|
|
Y
|
yttrium
|
| |
Fm
|
fermium
|
|
Pb
|
lead*
|
|
Yb
|
ytterbium
|
| |
Fr
|
francium
|
|
Pd
|
palladium
|
|
Zn
|
zinc
|
| |
Ga |
gallium |
|
Pm |
promethium |
|
Zr
|
zirconium
|
* Some element symbols derive from ancient names; Ag derives from argentum,
Au from aurum, Cu from cuprum, Fe from ferrum, Hg from hydrargyrum,
K from kalium, Na from natrium, Pb from plumbum, Sb from stibium, Sn
from stannum, and W from wolfram.
+ Alternative spellings commonly used are: 'aluminum' for Al and 'cesium'
for Cs.
News
& Notices
| Organizations & People | Standing
Committees
Divisions | Projects | Reports
| Publications | Symposia
| AMP
Links of Interest | Search the
Site | Home Page
Page last modified 1 November 2007.
Copyright ©1997-2007 International Union of Pure and Applied Chemistry.
Questions or comments about IUPAC, please contact, the Secretariat.
Questions regarding the website, please contact Web
Help.
|