Periodic Table of the Elements
Alkali Metals
Alkaline Earth Metals
Transition Metals
Other Metals
Nonmetals
Noble Gases
Lanthanoids
Actinoids
hydrogen
1
H
1.00794
lithium
beryllium
3
4
C
Br
He
solid
liquid
gas
Tc
synthetic
helium
2
He
key
element name
boron
carbon
nitrogen
oxygen
fluorine
4.002602
neon
atomic number
5
6
7
8
9
10
Li
Be
symbol
B
C
N
O
F
Ne
6.941
sodium
9.012182
magnesium
atomic weight
10.811
aluminium
12.0107
silicon
14.00674
phosphorus
15.9994
sulphur
18.9984
chlorine
20.1797
argon
11
12
13
14
15
16
17
18
Na
Mg
Al
Si
P
S
Cl
Ar
22.98977
potassium
24.3050
calcium
scandium
titanium
vanadium
chromium
manganese
iron
cobalt
nickel
copper
zinc
30.97376
arsenic
32.065
selenium
35.453
bromine
39.984
krypton
19
20
21
22
23
24
25
26
27
28
29
30
33
34
35
36
Cr
Mn
K
Ca
Sc
Ti
V
39.0983
rubidium
40.078
strontium
44.95591
yttrium
47.867
zirconium
50.9415
niobium
51.9961
54.93805
molybdenum technetium
26.981538
28.0855
gallium
germanium
31
32
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
Se
Br
Kr
55.845
ruthenium
58.9332
rhodium
58.6934
palladium
63.546
silver
65.409
cadmium
69.723
indium
72.64
tin
74.9216
antimony
78.96
tellurium
79.904
iodine
83.798
xenon
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
Rb
Sr
Y
Zr
Nb
Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
85.4678
caesium
87.62
barium
88.90585
lutetium
91.225
hafnium
92.90638
tantalum
95.94
tungsten
[98]
rhenium
101.07
osmium
102.9055
iridium
106.42
platinum
107.8682
gold
112.411
mercury
114.818
thallium
118.710
lead
121.760
bismuth
127.60
polonium
126.9045
astatine
131.293
radon
55
56
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
Lu
Hf
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
200.59
ununbium
204.3833
207.2
ununquadium
208.980
[209]
[210]
[222]
ytterbium
Cs
132.90545
francium
Ba
137.327
radium
174.967
178.49
lawrencium rutherfordium
Ta
W
Re
Os
180.9479
dubnium
183.84
seaborgium
186.207
bohrium
190.23
hassium
192.217
195.078
196.96655
meitnerium darmstadtium roentgenium
87
88
103
104
105
106
107
108
109
110
111
112
114
Fr
Ra
Lr
Rf
Db
Sg
Bh
Hs
Mt
Ds
Rg
Uub
Uuq
[223]
[226]
[262]
[261]
[262]
[266]
[264]
[269]
[268]
[271]
[272]
[285]
[289]
lanthanum
cerium
samarium
europium
gadolinium
terbium
dysprosium
holmium
erbium
thulium
57
58
59
60
61
62
63
64
65
66
67
68
69
70
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
138.9055
actinium
140.116
thorium
140.90765
protactinium
144.24
uranium
[145]
neptunium
150.36
plutonium
151.964
americium
157.25
curium
158.9253
berkelium
167.259
fermium
168.934
mendelevium
173.04
nobelium
89
90
91
92
93
94
95
96
97
praseodymium neodymium promethium
162.50
164.930
californium einsteinium
98
99
100
101
102
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
[227]
232.038
231.0359
238.0289
[237]
[244]
[243]
[247]
[247]
[251]
[252]
[257]
[258]
[259]
Notes: Elements with atomic weights in square brackets have no stable isotopes. Different sources list different atomic weights for elements. The difference arises from the differing atomic weights of
various isotopes. We have tried to list the most stable isotope. For example, some sources list the atomic weight of seaborgium as 263 and others 266. The most stable isotope appears have an
atomic weight of 266 so we list that weight here. Roentgenium is still the unofficial name of element 111 but it is the one recommended by the IUPAC so we list it here instead of the generic
‘unununium’. Aluminum, cesium, and sulfur are the American spellings for aluminium, caesium, and sulphur. Announcements of discoveries of elements 116 and 118 were made and later retracted.
This table was downloaded from http://www.science-teachers.com/printable_periodic_tables.htm