Periodic Table of the Elements
1
H
1.007947
Element Color Legend
M E T A L S
N O N M E T A L S
Alkali Metals
Post-Transition Metals
Metaloids
Halogens
Alkali Earth Metals
Lanthanides
Other Non-metals
Noble Elements
Transition Metals
Actinides
2
He
4.002602
3
Li
6.9412
4
Be
9.012182
5
B
10.8117
6
C
12.01078
7
N
14.00672
8
O
15.99943
9
F
18.998403
10
Ne
20.17976
11
Na
22.989769
12
Mg
24.30506
13
Al
26.981539
14
Si
28.08553
15
P
30.973762
16
S
32.0655
17
Cl
35.4532
18
Ar
39.9481
19
K
39.09831
20
Ca
40.0784
21
Sc
44.955913
22
Ti
47.8671
23
V
50.94151
24
Cr
51.99616
25
Mn
54.938046
26
Fe
55.8452
27
Co
58.933196
28
Ni
58.693442
29
Cu
63.5463
30
Zn
65.3824
31
Ga
69.7231
32
Ge
72.631
33
As
74.921602
34
Se
78.96
35
Br
79.9041
36
Kr
83.798
37
Rb
85.46783
38
Sr
87.62
39
Y
88.90585
40
Zr
91.224
41
Nb
92.90638
42
Mo
95.962
43
Tc
[98]
44
Ru
101.07
45
Rh
102.9055
46
Pd
106.42
47
Ag
107.8682
48
Cd
112.411
49
In
144.818
50
Sn
118.71
51
Sb
121.7601
52
Te
127.6
53
I
126.90447
54
Xe
131.2936
55
Cs
132.905452
56
Ba
137.33
†
71
Lu
174.96684
72
Hf
178.49
73
Ta
180.94788
74
W
183.84
75
Re
186.207
76
Os
190.23
77
Ir
192.217
78
Pt
195.084
79
Au
196.966569
80
Hg
200.592
81
Tl
204.3833
82
Pb
207.2
83
Bi
208.980401
84
Po
[209]
85
At
[210]
86
Rn
[222]
87
Fr
[223]
88
Ra
[226]
‡
103
Lr
[262]
104
Rf
[267]
105
Db
[268]
106
Sg
[269]
107
Bh
[270]
108
Hs
[269]
109
Mt
[278]
110
Ds
[281]
111
Rg
[281]
112
Cn
[285]
113
Nh
[286]
114
Fl
[289]
115
Mc
[290]
116
Lv
[293]
117
Ts
[294]
118
Og
[294]
†
57
La
138.90547
58
Ce
140.116
59
Pr
140.90765
60
Nd
144.242
61
Pm
[145]
62
Sm
150.36
63
Eu
151.964
64
Gd
157.25
65
Tb
158.92535
66
Dy
162.5
67
Ho
164.93032
68
Er
167.259
69
Tm
168.93421
70
Yb
173.0545
‡
89
Ac
[227]
90
Th
232.0381
91
Pa
231.03588
92
U
238.028913
93
Np
[237]
94
Pu
[244]
95
Am
[243]
96
Cm
[247]
97
Bk
[247]
98
Cf
[251]
99
Es
[252]
100
Fm
[257]
101
Md
[258]
102
No
[259]