Barium
Ba 137.327
Lanthanum La 138.9055
Cerium
Ce 140.116
Praseodymium Pr 140.90765
Neodymium Nd 144.24
Promrthium Pm 144.9127*
Samarium Sm 150.36
Europium Eu 151.964
Gadolinium Gd 157.25
Terbium Tb 158.92534
Dysprosium Dy 162.50
Holmium Ho 164.93032
Erbium Er 167.259
Thulium Tm 168.93421
Ytterbium Yb 173.04
Lutetium Lu 174.967
Hafnium Hf 178.49
Tantalum Ta 180.9479
Tungsten W 183.84
Rhenium Re 186.207
Osmium Os 190.23
Iridium Ir 192.217
Platinum Pt 195.078
Gold
Au 196.96655
Mercury
Hg 200.59
Thallium Tl 204.3833
Lead
Pb 207.2
Bismuth
Bi 208.98038
Polonium Po 208.9824*
Astatine At 209.9871
Radon
Rn 222.0176*
Francium Fr 223.0197*
Radium Ra 226.0254*
Actinium Ac 227.0277*
Thorium Th 232.0381*
Protactinium Pa 231.03588*
Uranium U 238.0291
Neptunium Np 237.0482*
Plutonium Pu 244.0642*
Amercium Am 243.0614*
Curium
Cm 247.0704*
Berkelium
Bk 247.0703*
Californium Cf 251.0796*
Einsteinium Es 252.0803*
Fermium Fm 257.0951*
Mendelevium Md 258.0984*
Nobelium No 259.1010*
Lawrencium Lr 262.1097*
Rutherfordium Rf 261.1088*
Dubnium Db 262.1141*
Seaborgium Sg 266.1219*
Bohrium Bh 264.12*
Meitnerium Mt 268.1388*
Unununium Uuu 272.1535*
Hydrogen H 1.00794
Helium He 4.002602
Lithium Liber 6.941
Beryllium Be 9.012182
Boron
B 10.811
Carbon
C 12.0107
Nitrogen
N 14.0067
Oxygen
O 15.9994
Fluorine
F 18.9984032
Neon
Ne 20.1797
Sodium Na 22.989770
Magnesium Mg 24.3050
Aluminum Al 26.981538
Silicon
Si 28.0855
Phosphorus P 30.973761
Sulfur
S 32.065
Chlorine
Cl 35.453
Argon
Ar 39.948
Potassium K 39.0983
Calcium Ca 40.078
Scandium Sc 44.955910
Titanium Ti 47.867
Vanadium V 50.9415
Chromium Cr 51.9961
Manganese Mn 54.938049
Iron
Fe 55.845
Cobalt
Co 58.933200
Nickel
Ni 58.6934
Copper
Cu 63.546
Zinc
Zn 65.39
Gallium Ga 69.723
Germanium Ge 72.64
Arsenic
As 74.92160
Selenium Se 78.96
Bromine
Br 79.904
Krypton
Kr 83.80
Rubidium Rb 85.4678
Strontium Sr 87.62
Yttrium
Y 88.90585
Zirconium Zr 91.224
Niobium Nb 92.90638
Molybdenum Mo 95.94
Technetium Tc 97.9072*
Ruthenium Ru 101.07
Rhodium Rh 102.90550
Palladium Pd 106.42
Silver
Ag 107.8682
Cadmium Cd 112.411
Indium In 114.818
Tin
Sn 118.710
Antimony Sb 121.760
Tellurium Te 127.60
Iodine
I 126.90447
Xenon
Xe 131.293
Cesium Cs 132.90545
Element
Symbol
Atomic
number
Atomic
weight
*Relative atomic mass of the isotope of that element of longest known half-life.
Element
Symbol
Atomic
number
Atomic
weight
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
109
111
136
