Z
|
Name
|
Sym
|
Mass (g/mol)
|
Selected isotopes
|
1 |
Hydrogen |
H |
0,000,001 1.00794(7)[1] [2] [3] |
Hydrogen-1, Deuterium (Hydrogen-2), Tritium (Hydrogen-3), Hydrogen-4, Hydrogen-5
|
2 |
Helium |
He |
0,000,004 4.002602(2)[1] [3] |
Diproton (hypothetical Helium-2 nucleus), Helium-3, Helium-4
|
3 |
Lithium |
Li |
0,000,006 6.941(2)[1] [2] [3] [4] |
|
4 |
Beryllium |
Be |
0,000,009 9.012182(3) |
|
5 |
Boron |
B |
0,000,010 10.811(7)[1] [2] [3] |
|
6 |
Carbon |
C |
0,000,012 12.0107(8)[1] [3] |
Carbon-11, Carbon-12, Carbon-13, Carbon-14
|
7 |
Nitrogen |
N |
0,000,014 14.0067(2)[1] [3] |
Nitrogen-13, Nitrogen-14, Nitrogen-15
|
8 |
Oxygen |
O |
0,000,015 15.9994(3)[1] [3] |
Oxygen-18
|
9 |
Fluorine |
F |
0,000,018 18.9984032(5) |
Fluorine-18
|
10 |
Neon |
Ne |
0,000,020 20.1797(6)[1] [2] |
|
11 |
Sodium |
Na |
0,000,022 22.98976928(2) |
|
12 |
Magnesium |
Mg |
0,000,024 24.3050(6) |
|
13 |
Aluminium |
Al |
0,000,026 26.9815386(8) |
|
14 |
Silicon |
Si |
0,000,028 28.0855(3)[3] |
|
15 |
Phosphorus |
P |
0,000,030 30.973762(2) |
|
16 |
Sulfur |
S |
0,000,032 32.065(5)[1] [3] |
|
17 |
Chlorine |
Cl |
0,000,035 35.453(2)[1] [2] [3] |
Chlorine-36
|
18 |
Argon |
Ar |
0,000,039 39.948(1)[1] [3] |
|
19 |
Potassium |
K |
0,000,039 39.0983(1) |
|
20 |
Calcium |
Ca |
0,000,040 40.078(4)[1] |
Calcium-48
|
21 |
Scandium |
Sc |
0,000,044 44.955912(6) |
|
22 |
Titanium |
Ti |
0,000,047 47.867(1) |
|
23 |
Vanadium |
V |
0,000,050 50.9415(1) |
|
24 |
Chromium |
Cr |
0,000,051 51.9961(6) |
|
25 |
Manganese |
Mn |
0,000,054 54.938045(5) |
|
26 |
Iron |
Fe |
0,000,055 55.845(2) |
Iron-56
|
27 |
Cobalt |
Co |
0,000,058 58.933195(5) |
Cobalt-60
|
28 |
Nickel |
Ni |
0,000,058 58.6934(2) |
Nickel-62
|
29 |
Copper |
Cu |
0,000,063 63.546(3)[3] |
Copper-64
|
30 |
Zinc |
Zn |
0,000,065 65.409(4) |
|
31 |
Gallium |
Ga |
0,000,069 69.723(1) |
|
32 |
Germanium |
Ge |
0,000,072 72.64(1) |
|
33 |
Arsenic |
As |
0,000,074 74.92160(2) |
|
34 |
Selenium |
Se |
0,000,078 78.96(3)[3] |
Selenium-79
|
35 |
Bromine |
Br |
0,000,079 79.904(1) |
|
36 |
Krypton |
Kr |
0,000,083 83.798(2)[1] [2] |
Krypton-85
|
37 |
Rubidium |
Rb |
0,000,085 85.4678(3)[1] |
|
38 |
Strontium |
Sr |
0,000,087 87.62(1)[1] [3] |
Strontium-90
|
39 |
Yttrium |
Y |
0,000,088 88.90585(2) |
|
40 |
Zirconium |
Zr |
0,000,091 91.224(2)[1] |
Zirconium-93
|
41 |
Niobium |
Nb |
0,000,092 92.906 38(2) |
|
42 |
Molybdenum |
Mo |
0,000,095 95.94(2)[1] |
|
43 |
Technetium |
Tc |
0,000,098 [98.9063][5] |
Technetium-99, Technetium-99m
|
44 |
Ruthenium |
Ru |
0,000,101 101.07(2)[1] |
Ruthenium-106
|
45 |
Rhodium |
Rh |
0,000,102 102.90550(2) |
|
46 |
Palladium |
Pd |
0,000,106 106.42(1)[1] |
Palladium-103, Palladium-107
|
47 |
Silver |
Ag |
0,000,107 107.8682(2)[1] |
|
48 |
Cadmium |
Cd |
0,000,112 112.411(8)[1] |
Cadmium-113m
|
49 |
Indium |
In |
0,000,114 114.818(3) |
|
50 |
Tin |
Sn |
0,000,118 118.710(7)[1] |
Tin-121m, Tin-126
|
51 |
Antimony |
Sb |
0,000,121 121.760(1)[1] |
|
52 |
Tellurium |
Te |
0,000,127 127.60(3)[1] |
Tellurium-124
|
53 |
Iodine |
I |
0,000,126 126.90447(3) |
Iodine-123, Iodine-124, Iodine-125, Iodine-129, Iodine-131
|
54 |
Xenon |
Xe |
0,000,131 131.293(6)[1] [2] |
Xenon-133, Xenon-135
|
55 |
Caesium |
Cs |
0,000,132 132.9054519(2) |
Caesium-134, Caesium-135, Caesium-137
|
56 |
Barium |
Ba |
0,000,137 137.327(7) |
|
57 |
Lanthanum |
La |
0,000,138 138.90547(7)[1] |
|
58 |
Cerium |
Ce |
0,000,140 140.116(1)[1] |
|
59 |
Praseodymium |
Pr |
0,000,140 140.90765(2) |
|
60 |
Neodymium |
Nd |
0,000,144 144.242(3)[1] |
|
61 |
Promethium |
Pm |
0,000,146 [146.9151][5] |
Promethium-147
|
62 |
Samarium |
Sm |
0,000,150 150.36(2)[1] |
Samarium-149, Samarium-151
|
63 |
Europium |
Eu |
0,000,151 151.964(1)[1] |
Europium-155
|
64 |
Gadolinium |
Gd |
0,000,157 157.25(3)[1] |
|
65 |
Terbium |
Tb |
0,000,158 158.92535(2) |
|
66 |
Dysprosium |
Dy |
0,000,162 162.500(1)[1] |
|
67 |
Holmium |
Ho |
0,000,164 164.93032(2) |
|
68 |
Erbium |
Er |
0,000,167 167.259(3)[1] |
|
69 |
Thulium |
Tm |
0,000,168 168.93421(2) |
|
70 |
Ytterbium |
Yb |
0,000,173 173.04(3)[1] |
|
71 |
Lutetium |
Lu |
0,000,174 174.967(1)[1] |
|
72 |
Hafnium |
Hf |
0,000,178 178.49(2) |
|
73 |
Tantalum |
Ta |
0,000,180 180.9479(1) |
|
74 |
Tungsten |
W |
0,000,183 183.84(1) |
|
75 |
Rhenium |
Re |
0,000,186 186.207(1) |
|
76 |
Osmium |
Os |
0,000,190 190.23(3)[1] |
|
77 |
Iridium |
Ir |
0,000,192 192.217(3) |
Iridium-192
|
78 |
Platinum |
Pt |
0,000,195 195.084(9) |
|
79 |
Gold |
Au |
0,000,196 196.966569(4) |
|
80 |
Mercury |
Hg |
0,000,200 200.59(2) |
|
81 |
Thallium |
Tl |
0,000,204 204.3833(2) |
|
82 |
Lead |
Pb |
0,000,207 207.2(1)[1] [3] |
|
83 |
Bismuth |
Bi |
0,000,208 208.98040(1) |
Bismuth-209
|
84 |
Polonium |
Po |
0,000,208 [208.9824][5] |
|
85 |
Astatine |
At |
0,000,209 [209.9871][5] |
|
86 |
Radon |
Rn |
0,000,222 [222.0176][5] |
|
87 |
Francium |
Fr |
0,000,223 [223.0197][5] |
|
88 |
Radium |
Ra |
0,000,226 [226.0254][5] |
|
89 |
Actinium |
Ac |
0,000,227 [227.0278][5] |
|
90 |
Thorium |
Th |
0,000,232 232.03806(2)[5] [1] |
Thorium-228, Thorium-229, Thorium-230, Thorium-231, Thorium-232, Thorium-234
|
91 |
Protactinium |
Pa |
0,000,231 231.03588(2)[5] |
Protactinium-230
|
92 |
Uranium |
U |
0,000,238 238.02891(3)[5] [1] [2] |
Uranium-232, Uranium-233, Uranium-234, Uranium-235, Uranium-236, Uranium-238, Uranium-239, Uranium-240, Uranium-241
|
93 |
Neptunium |
Np |
0,000,237 [237.0482][5] |
Neptunium-235, Neptunium-236
|
94 |
Plutonium |
Pu |
0,000,244 [244.0642][5] |
Plutonium-238, Plutonium-239, Plutonium-240, Plutonium-241, Plutonium-244
|
95 |
Americium |
Am |
0,000,243 [243.0614][5] |
Americium-242, Americium-243
|
96 |
Curium |
Cm |
0,000,247 [247.0703][5] |
|
97 |
Berkelium |
Bk |
0,000,247 [247.0703][5] |
|
98 |
Californium |
Cf |
0,000,251 [251.0796][5] |
|
99 |
Einsteinium |
Es |
0,000,252 [252.0829][5] |
|
100 |
Fermium |
Fm |
0,000,257 [257.0951][5] |
|
101 |
Mendelevium |
Md |
0,000,258 [258.0986][5] |
|
102 |
Nobelium |
No |
0,000,259 [259.1009][5] |
|
103 |
Lawrencium |
Lr |
0,000,260 [260.1053][5] |
|
104 |
Rutherfordium |
Rf |
0,000,261 [261.1087][5] |
|
105 |
Dubnium |
Db |
0,000,262 [262.1138][5] |
|
106 |
Seaborgium |
Sg |
0,000,263 [263.1182][5] |
|
107 |
Bohrium |
Bh |
0,000,262 [262.1229][5] |
|
108 |
Hassium |
Hs |
0,000,265 [265][5] |
|
109 |
Meitnerium |
Mt |
0,000,266 [266][5] |
|
110 |
Darmstadtium |
Ds |
0,000,269 [269][5] |
|
111 |
Roentgenium |
Rg |
0,000,272 [272][5] |
|
112 |
Ununbium |
Uub |
0,000,285 [285][5] |
|
113 |
Ununtrium |
Uut |
0,000,284 [284][5] |
|
114 |
Ununquadium |
Uuq |
0,000,289 [289][5] |
|
115 |
Ununpentium |
Uup |
0,000,288 [288][5] |
|
116 |
Ununhexium |
Uuh |
0,000,292 [292][5] |
|
117 |
Ununseptium |
Uus |
0,000,293 [295] [6] |
|
118 |
Ununoctium |
Uuo |
0,000,294 [294][5] |
|