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Group → 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
↓ Period
1
1
H
1.0079

2
He
4.0026
2
3
Li
6.491
4
Be
9.0122

5
B
10.811
6
C
12.011
7
N
14.007
8
O
15.999
9
F
18.998
10
Ne
20.180
3
11
Na
22.990
12
Mg
24.305

13
Al
26.982
14
Si
28.086
15
P
30.974
16
S
32.065
17
Cl
35.453
18
Ar
39.948
4
19
K
39.098
20
Ca
40.078
21
Sc
44.956
22
Ti
47.867
23
V
50.942
24
Cr
51.996
25
Mn
54.938
26
Fe
55.845
27
Co
58.993
28
Ni
58.693
29
Cu
63.546
30
Zn
65.409
31
Ga
69.723
32
Ge
72.64
33
As
74.922
34
Se
78.96
35
Br
79.904
36
Kr
83.798
5
37
Rb
85.468
38
Sr
87.62
39
Y
88.906
40
Zr
91.224
41
Nb
92.906
42
Mo
95.94
43
Tc
[98]
44
Ru
101.07
45
Rh
102.91
46
Pd
106.42
47
Ag
107.87
48
Cd
112.41
49
In
114.82
50
Sn
118.71
51
Sb
121.76
52
Te
127.60
53
I
126.90
54
Xe
131.29
6
55
Cs
132.91
56
Ba
137.33
* 72
Hf
178.49
73
Ta
180.95
74
W
183.84
75
Re
186.21
76
Os
190.23
77
Ir
192.22
78
Pt
195.08
79
Au
196.97
80
Hg
200.59
81
Tl
204.38
82
Pb
207.2
83
Bi
208.98
84
Po
[209]
85
At
[210]
86
Rn
[222]
7
87
Fr
[223]
88
Ra
[226]
** 104
Rf
[261]
105
Db
[262]
106
Sg
[266]
107
Bh
[264]
108
Hs
[277]
109
Mt
[268]
110
Ds
[281]
111
Rg
[272]
112
Cn
[285]
113
Nh
[286]
114
Fl
[289]
115
Mc
[290]
116
Lv
[292]
117
Ts
[294]
118
Og
[294]

* Lanthanides 57
La
138.91
58
Ce
140.12
59
Pr
140.91
60
Nd
144.24
61
Pm
[145]
62
Sm
150.36
63
Eu
151.96
64
Gd
157.25
65
Tb
158.93
66
Dy
162.50
67
Ho
164.93
68
Er
167.26
69
Tm
168.93
70
Yb
173.04
71
Lu
174.97
** Actinides 89
Ac
[227]
90
Th
232.04
91
Pa
231.04
92
U
283.03
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]
103
Lr
[262]

Notes

  • Actinides and lanthanides are collectively known as "rare earth elements".
  • Alkali metals, alkaline earth metals, transition metals, actinides, lanthanides, and poor metals are all collectively known as "metals".
  • Halogens and noble gases are also non-metals.
  • Atomic masses stated in square brackets, "[]", refer to that of the most stable isotope.

State at standard temperature and pressure (0°C and 1 atm)

Gaseous Liquid Solid Noble Gas
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This page uses content from Wikipedia.
The original article was at Periodic table. The list of authors can be seen in the page history. As with Chemistry, the text of Wikipedia is available under the GNU Free Documentation License.


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