PERIODIC TABLE OF ELEMENTS
1
2
3
1
Atomic #
1.008
Weight
3
4
4
5
6
7
8
9
10
11
12
13
14
15
16
17
2
Symbol
1 H
Hydrogen Name
He
Pnictogens Chalcogens
Be
2 Li
Lithium Beryllium
7
Carbon
12.011
Nitrogen Oxygen Fluorine Neon
14.007
15.999 18.998
20.180
14
15
6.94
9.0122
11
12
13
22.990
24.305
Aluminium Silicon
26.982 28.085
19
20
21
22
23
24
25
26
39.098
40.078
44.956
47.867
50.942
51.996
54.938
37
38
39
40
41
42
85.468
87.62
88.906
91.224
92.906
55
56
73
Mg
3 Na
Sodium Magnesium
Al
Ca
Sc
Ti
V
Cr
Mn Fe
4 K
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron
27
28
29
Cu
72
Hf
Ta
55.845
Cobalt
58.933
Nickel
58.693
Copper
63.546
Zinc
65.38
43
44
45
46
47
48
95.95
(98)
101.07
102.91
106.42
107.87
Cadmium Indium
112.41
114.82
74
75
76
77
78
79
105
W
Re
Os
Ir
Pt
(223)
(226)
89–103
Hs
109
Mt
Ds
82
35
Br
Selenium Bromine Krypton
78.971
79.904 83.798
52
Te
53
I
Antimony Tellurium Iodine
121.76
127.60
126.90
83
36
Kr
84
85
54
Xe
Xenon
131.29
86
Rn
111
112
113
114
115
116
117
118
110
108
Tin
118.71
51
Sb
Ar
Chlorine Argon
35.45
39.948
At
104
Bh
50
34
Se
18
Po
88
107
33
As
Cl
Bi
87
Sg
81
Phosphorus Sulfur
30.974
32.06
Germanium Arsenic
72.630 74.922
Sn
17
S
Ne
Pb
Platinum Gold
195.08
196.97
106
49
In
16
10
Tl
Hafnium Tantalum Tungsten Rhenium Osmium Iridium
178.49
180.95
183.84 186.21
190.23 192.22
Db
80
Gallium
69.723
32
Ge
F
Hg
137.33
Rf
Cd
Ga
P
O
Au
132.91
Ra
7 Fr
Francium Radium
Zn
31
Ni
Sr
Y
Zr
Nb Mo Tc
Ru
Rh Pd
Ag
5 Rb
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver
57–71
30
Co
Si
N
9
Helium
4.0026
6
C
8
Halogens
5
B
Boron
10.81
Ba
6 Cs
Caesium Barium
18
Rg
Mercury Thallium Lead
200.59 204.38 207.2
Cn
Nh
Fl
Bismuth Polonium Astatine Radon
(210)
(222)
208.98 (209)
Mc
Lv
Ts
Og
Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
(267)
(268)
(269)
(270)
(277)
(278)
(281)
(282)
(285)
(286)
(289)
(290)
(293)
(294)
(294)
For elements with no stable isotopes, the mass number of the isotope with the longest half-life is in parentheses.
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
138.91
140.12
140.91
144.24
(145)
150.36
151.96
157.25
158.93
162.50
164.93
167.26
168.93
173.05
174.97
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
(227)
232.04
231.04
238.03
(237)
(244)
(243)
(247)
(247)
(251)
(252)
(257)
(258)
(259)
(266)
Ce
Pr
Nd
Pm Sm Eu
Gd Tb
Dy
Ho Er
Tm Yb
Lu
6 La
Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium
Ptable
.com
Th
Pa
U
Np
Pu
Am Cm Bk
Cf
Es
Fm Md No
Lr
7 Ac
Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium
Design Copyright © 2017 Michael Dayah (michael@dayah.com). For a fully interactive version with orbitals, isotopes, compounds, and free printouts, visit http://www.ptable.com/