1
H
Hydrogen
1.0079

Periodic Table

2
He
Helium
4.0026
3
Li
Lithium
6.94
4
Be
Beryllium
9.01218
Welcome to this interactive Periodic Table of elements.Click on element to read detailed information.
5
B
Boron
10.81
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.9984
10
Ne
Neon
20.1797
11
Na
Sodium
22.9898
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.9815
14
Si
Silicon
28.085
15
P
Phosphorus
30.9738
16
S
Sulfur
32.06
17
Cl
Chlorine
35.45
18
Ar
Argon
39.9481
19
K
Potassium
39.0983
20
Ca
Calcium
40.0784
21
Sc
Scandium
44.9559
22
Ti
Titanium
47.8671
23
V
Vanadium
50.9415
24
Cr
Chromium
51.9962
25
Mn
Manganese
54.938
26
Fe
Iron
55.8452
27
Co
Cobalt
58.9332
28
Ni
Nickel
58.6934
29
Cu
Copper
63.5463
30
Zn
Zinc
65.382
31
Ga
Gallium
69.7231
32
Ge
Germanium
72.6308
33
As
Arsenic
74.9216
34
Se
Selenium
78.9718
35
Br
Bromine
79.904
36
Kr
Krypton
83.7982
37
Rb
Rubidium
85.4678
38
Sr
Strontium
87.621
39
Y
Yttrium
88.9058
40
Zr
Zirconium
91.2242
41
Nb
Niobium
92.9064
42
Mo
Molybdenum
95.951
43
Tc
Technetium
98
44
Ru
Ruthenium
101.072
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.421
47
Ag
Silver
107.868
48
Cd
Cadmium
112.414
49
In
Indium
114.818
50
Sn
Tin
118.711
51
Sb
Antimony
121.76
52
Te
Tellurium
127.603
53
I
Iodine
126.904
54
Xe
Xenon
131.294
55
Cs
Cesium
132.905
56
Ba
Barium
137.328
57-71
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.242
61
Pm
Promethium
145
62
Sm
Samarium
150.362
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.253
65
Tb
Terbium
158.925
66
Dy
Dysprosium
162.5
67
Ho
Holmium
164.93
68
Er
Erbium
167.259
69
Tm
Thulium
168.934
70
Yb
Ytterbium
173.045
71
Lu
Lutetium
174.967
72
Hf
Hafnium
178.492
73
Ta
Tantalum
180.948
74
W
Tungsten
183.841
75
Re
Rhenium
186.207
76
Os
Osmium
190.233
77
Ir
Iridium
192.217
78
Pt
Platinum
195.085
79
Au
Gold
196.967
80
Hg
Mercury
200.592
81
Tl
Thallium
204.38
82
Pb
Lead
207.21
83
Bi
Bismuth
208.98
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
87
Fr
Francium
223
88
Ra
Radium
226
89-103
89
Ac
Actinium
227
90
Th
Thorium
232.038
91
Pa
Protactinium
231.036
92
U
Uranium
238.029
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
266
104
Rf
Rutherfordium
267
105
Db
Dubnium
268
106
Sg
Seaborgium
269
107
Bh
Bohrium
270
108
Hs
Hassium
269
109
Mt
Meitnerium
278
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
282
112
Cn
Copernicium
285
113
Nh
Nihonium
286
114
Fl
Flerovium
289
115
Mc
Moscovium
289
116
Lv
Livermorium
293
117
Ts
Tennessine
294
118
Og
Oganesson
294
The periodic table, also called as the periodic table of elements, is a classification of elements and atomic types according to their increasing atomic number, as well as chemical and physical properties as well as electron configuration in the outer electron shells. The vertical columns on the periodic table are called groups and horizontal rows on the periodic table are called periods. The elements of periodic table can also be categorized according to element families (groups), state of matter, chemical classification or element block. The block names (s, p, d, f) originated from descriptions of spectroscopic lines of atomic orbitals: sharp, principal, diffuse and fundamental. The first version of the periodic table was presented by Russian chemist Dmitry Mendeleev in February 1869. For quick and simple reference, go to the list of chemical elements