1
H
1,00794(7) 		2
He
4,002602(2)
3
Li
6,941(2) 		4
Be
9,012182(3) 		5
B
10,811(7) 		6
C
12,0107(8) 		7
N
14,00674(7) 		8
O
15,9994(3) 		9
F
18,9984032(5) 		10
Ne
20,1797(6)
11
Na
22,98976928(2) 		12
Mg
24,3050(6) 		13
Al
26,9815386(8) 		14
Si
28,0855(3) 		15
P
30,973762(2) 		16
S
32,066(6) 		17
Cl
35,4527(9) 		18
Ar
39,948(1)
19
K
39,0983(1) 		20
Ca
40,078(4) 		21
Sc
44,955912(6) 		22
Ti
47,867(1) 		23
V
50,9415(1) 		24
Cr
51,9961(6) 		25
Mn
54,938045(5) 		26
Fe
55,845(2) 		27
Co
58,933195(5) 		28
Ni
58,6934(2) 		29
Cu
63,546(3) 		30
Zn
65,39(2) 		31
Ga
69,723(1) 		32
Ge
72,61(2) 		33
As
74,92160(2) 		34
Se
78,96(3) 		35
Br
79,904(1) 		36
Kr
83,80(1)
37
Rb
85,4678(3) 		38
Sr
87,62(1) 		39
Y
88,90585(2) 		40
Zr
91,224(2) 		41
Nb
92,90638(2) 		42
Mo
95,94(1) 		43
Tc
[97,9072] 		44
Ru
101,07(2) 		45
Rh
102,90550(2) 		46
Pd
106,42(1) 		47
Ag
107,8682(2) 		48
Cd
112,411(8) 		49
In
114,818(3) 		50
Sn
118,710(7) 		51
Sb
121,760(1) 		52
Te
127,60(3) 		53
I
126,90447(3) 		54
Xe
131,29(2)
55
Cs
132,9054519(2) 		56
Ba
137,327(7) 		57-71
* 		72
Hf
178,49(2) 		73
Ta
180,94788(2) 		74
W
183,84(1) 		75
Re
186,207(1) 		76
Os
190,23(3) 		77
Ir
192,217(3) 		78
Pt
195,084(9) 		79
Au
196,966569(4) 		80
Hg
200,59(2) 		81
Tl
204,3833(2) 		82
Pb
207,2(1) 		83
Bi
208,98040(1) 		84
Po
[208,9824] 		85
At
[209,9871] 		86
Rn
[222,0176]
87
Fr
[223,0197] 		88
Ra
[226,0254] 		89-103
**
 104
Rf
[263,1125] 		105
Db
[262,1144] 		106
Sg
[266,1219] 		107
Bh
[264,1247] 		108
Hs
[269,1341] 		109
Mt
[268,1388] 		110
Ds
[272,1463] 		111
Rg
[272,1535] 		112
Cn
[277] 		113
Nh
[284] 		114
Fl
[289] 		115
Mc
[288] 		116
Lv
[292] 		117
Ts
[292] 		118
Og
[294]
*  Lanthanides  57
La
138,90547(7) 		58
Ce
140,116(1) 		59
Pr
140,90765(2) 		60
Nd
144,242(3) 		61
Pm
[144,9127] 		62
Sm
150,36(2) 		63
Eu
151,964(1) 		64
Gd
157,25(3) 		65
Tb
158,92535(2) 		66
Dy
162,500(1) 		67
Ho
164,93032(2) 		68
Er
167,259(3) 		69
Tm
168,93421(2) 		70
Yb
173,04(3) 		71
Lu
174,967(1)
**  Actinides