Element Types
Metals Metalloids Nonmetals
Alkali
Metals
Alkaline Earth
Metals
Inner_Transition_Metals Transition
Metals
Other
Metals
Halogens Noble
Gases
Other
Nonmetals
Lanthanoids Actinoids
Periods
One Two Three Four Five Six Seven
Groups
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 1

H

1.00794
2 18

He

4.002602

3 1

Li

6.941
4 2

Be

9.012182
5 13

B

10.811
6 14

C

12.0107
7 15

N

14.00674
8 16

O

15.9994
9 17

F

18.99840
10 18

Ne

20.1797

11 1

Na

22.98976
12 2

Mg

24.3050
13 13

Al

26.98153
14 14

Si

28.0855
15 15

P

30.97376
16 16

S

32.065
17 17

Cl

35.453
18 18

Ar

39.948

19 1

K

39.0983
20 2

Ca

40.078
21 3

Sc

44.95591
22 4

Ti

47.867
23 5

V

50.9415
24 6

Cr

51.9961
25 7

Mn

54.93804
26 8

Fe

55.845
27 9

Co

58.93319
28 10

Ni

58.6934
29 11

Cu

63.546
30 12

Zn

65.409
31 13

Ga

69.723
32 14

Ge

72.64
33 15

As

74.92160
34 16

Se

78.96
35 17

Br

79.904
36 18

Kr

83.798

37 1

Rb

85.4678
38 2

Sr

87.62
39 3

Y

88.90585
40 4

Zr

91.224
41 5

Nb

92.90638
42 6

Mo

95.94
43 7

Tc

(90.9064
44 8

Ru

101.07
45 9

Rh

102.9055
46 10

Pd

106.42
47 11

Ag

107.8682
48 12

Cd

112.411
49 13

In

114.818
50 14

Sn

118.710
51 15

Sb

121.760
52 16

Te

127.60
53 17

I

126.9044
54 18

Xe

131.293

55 1

Cs

132.9054
56 2

Ba

137.327
71 3

Lu

174.967
72 4

Hf

178.49
73 5

Ta

180.9478
74 6

W

183.84
75 7

Re

186.207
76 8

Os

190.23
77 9

Ir

192.217
78 10

Pt

195.084
79 11

Au

196.9665
80 12

Hg

200.59
81 13

Tl

204.3833
82 14

Pb

207.2
83 15

Bi

208.9804
84 16

Po

(208.982
85 17

At

(209.987
86 18

Rn

(222.017

87 1

Fr

(223.019
88 2

Ra

(226.025
103 3

Lr

(262)
104 4

Rf

(261)
105 5

Db

(262)
106 6

Sg

(263)
107 7

Bh

(262)
108 8

Hs

(265)
109 9

Mt

(266)


57 -

La

138.9054
58 -

Ce

140.116
59 -

Pr

140.9076
60 -

Nd

144.242
61 -

Pm

(144.912
62 -

Sm

150.36
63 -

Eu

151.964
64 -

Gd

157.25
65 -

Tb

158.9253
66 -

Dy

162.500
67 -

Ho

164.9303
68 -

Er

167.259
69 -

Tm

168.9342
70 -

Yb

173.04

89 -

Ac

(222.027
90 -

Th

232.0381
91 -

Pa

231.0359
92 -

U

238.0289
93 -

Np

(237.048
94 -

Pu

(244.064
95 -

Am

(243.061
96 -

Cm

(247.070
97 -

Bk

(247.070
98 -

Cf

(251.079
99 -

Es

(252.083
100 -

Fm

(257.095
101 -

Md

(258.098
102 -

No

(259.101



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