Interactive Periodic Table

Atomic Number
Symbol
Average Mass
1
H
1.0078
1
H
1.0078
2
He
4.0026
3
Li
6.9400
4
Be
9.0122
5
B
10.8100
6
C
12.0110
7
N
14.0070
8
O
15.9990
9
F
18.9984
10
Ne
20.1798
11
Na
22.9898
12
Mg
24.3050
13
Al
26.9815
14
Si
28.0850
15
P
30.9738
16
S
32.0600
17
Cl
35.4500
18
Ar
39.9481
19
K
39.0983
20
Ca
40.0784
21
Sc
44.9559
22
Ti
47.8671
23
V
50.9415
24
Cr
51.9962
25
Mn
54.9380
26
Fe
55.8452
27
Co
58.9332
28
Ni
58.6934
29
Cu
63.5463
30
Zn
65.3820
31
Ga
69.7231
32
Ge
72.6308
33
As
74.9216
34
Se
78.9718
35
Br
79.9040
36
Kr
83.7982
37
Rb
85.4678
38
Sr
87.6210
39
Y
88.9058
40
Zr
91.2242
41
Nb
92.9064
42
Mo
95.9510
43
Tc
98.0000
44
Ru
101.0720
45
Rh
102.9055
46
Pd
106.4210
47
Ag
107.8682
48
Cd
112.4144
49
In
114.8181
50
Sn
118.7107
51
Sb
121.7601
52
Te
127.6030
53
I
126.9045
54
Xe
131.2936
55
Cs
132.9055
56
Ba
137.3277
57
La
138.9055
58
Ce
140.1161
59
Pr
140.9077
60
Nd
144.2423
61
Pm
145.0000
62
Sm
150.3620
63
Eu
151.9641
64
Gd
157.2530
65
Tb
158.9254
66
Dy
162.5001
67
Ho
164.9303
68
Er
167.2593
69
Tm
168.9342
70
Yb
173.0451
71
Lu
174.9668
72
Hf
178.4920
73
Ta
180.9479
74
W
183.8410
75
Re
186.2071
76
Os
190.2330
77
Ir
192.2173
78
Pt
195.0849
79
Au
196.9666
80
Hg
200.5923
81
Tl
204.3800
82
Pb
207.2100
83
Bi
208.9804
84
Po
209.0000
85
At
210.0000
86
Rn
222.0000
87
Fr
223.0000
88
Ra
226.0000
89
Ac
227.0000
90
Th
232.0377
91
Pa
231.0359
92
U
238.0289
93
Np
237.0000
94
Pu
244.0000
95
Am
243.0000
96
Cm
247.0000
97
Bk
247.0000
98
Cf
251.0000
99
Es
252.0000
100
Fm
257.0000
101
Md
258.0000
102
No
259.0000
103
Lr
266.0000
104
Rf
267.0000
105
Db
268.0000
106
Sg
269.0000
107
Bh
270.0000
108
Hs
269.0000
109
Mt
278.0000
110
Ds
281.0000
111
Rg
282.0000
112
Cn
285.0000
113
Nh
286.0000
114
Fl
289.0000
115
Mc
289.0000
116
Lv
293.0000
117
Ts
294.0000
118
Og
294.0000
119
Uue
315.0000
Hydrogen
Alkali Metals
Alkaline Earth Metals
Transition Metals
Lanthanides
Actinides
Noble Gases
Halogens
Oxygen Group
Nitrogen Group
Carbon Group
Boron Group