1
H
1.008
                                                                                                                                
1 atomic mass [amu] 266
2
He
4.003
3
Li
6.941		4
Be
9.012		 Atomic Mass 5
B
10.81		6
C
12.01		7
N
14.01		8
O
16		9
F
19		10
Ne
20.18
11
Na
22.99		12
Mg
24.31		 1 amu = 1.66054×10-27 kg 13
Al
26.98		14
Si
28.09		15
P
30.97		16
S
32.07		17
Cl
35.45		18
Ar
39.95
19
K
39.1		20
Ca
40.08		21
Sc
44.96		22
Ti
47.88		23
V
50.94		24
Cr
52		25
Mn
54.94		26
Fe
55.85		27
Co
58.47		28
Ni
58.69		29
Cu
63.55		30
Zn
65.39		31
Ga
69.72		32
Ge
72.59		33
As
74.92		34
Se
78.96		35
Br
79.9		36
Kr
83.8
37
Rb
85.47		38
Sr
87.62		39
Y
88.91		40
Zr
91.22		41
Nb
92.91		42
Mo
95.94		43
Tc
98		44
Ru
101.1		45
Rh
102.9		46
Pd
106.4		47
Ag
107.9		48
Cd
112.4		49
In
114.8		50
Sn
118.7		51
Sb
121.8		52
Te
127.6		53
I
126.9		54
Xe
131.3
55
Cs
132.9		56
Ba
137.3		57
La
138.9		72
Hf
178.5		73
Ta
180.9		74
W
183.9		75
Re
186.2		76
Os
190.2		77
Ir
190.2		78
Pt
195.1		79
Au
197		80
Hg
200.5		81
Tl
204.4		82
Pb
207.2		83
Bi
209		84
Po
210		85
At
210		86
Rn
222
87
Fr
223		88
Ra
226		89
Ac
227		104
Rf
257		105
Db
260		106
Sg
263		107
Bh
262		108
Hs
265		109
Mt
266
 
58
Ce
140.1		59
Pr
140.9		60
Nd
144.2		61
Pm
147		62
Sm
150.4		63
Eu
152		64
Gd
157.3		65
Tb
158.9		66
Dy
162.5		67
Ho
164.9		68
Er
167.3		69
Tm
168.9		70
Yb
173		71
Lu
175
90
Th
232		91
Pa
231		92
U
238		93
Np
237		94
Pu
242		95
Am
243		96
Cm
247		97
Bk
247		98
Cf
249		99
Es
254		100
Fm
253		101
Md
256		102
No
254		103
Lr
257

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