Molecular Weight Calculator
Molecular Weight Notes:
Enter using the format: AgS2O3 and Na3AsO16H24
The following values are used in calculations. Taken from Wikipedia (September 4, 2007) with the trailing decimals of uncertainty removed.
Table of Atomic Elements and Weights
Atomic
Number |
Element
Name |
Atomic
Symbol |
Atomic
Weight (g/mol) |
| 1 |
Hydrogen |
H |
1.00794 |
| 2 |
Helium |
He |
4.002602 |
| 3 |
Lithium |
Li |
6.941 |
| 4 |
Beryllium |
Be |
9.012182 |
| 5 |
Boron |
B |
10.811 |
| 6 |
Carbon |
C |
12.0107 |
| 7 |
Nitrogen |
N |
14.0067 |
| 8 |
Oxygen |
O |
15.9994 |
| 9 |
Fluorine |
F |
18.9984032 |
| 10 |
Neon |
Ne |
20.1797 |
| 11 |
Sodium |
Na |
22.98976928 |
| 12 |
Magnesium |
Mg |
24.3050 |
| 13 |
Aluminum |
Al |
26.9815386 |
| 14 |
Silicon |
Si |
28.0855 |
| 15 |
Phosphorus |
P |
30.973762 |
| 16 |
Sulfur |
S |
32.065 |
| 17 |
Chlorine |
Cl |
35.453 |
| 18 |
Argon |
Ar |
39.948 |
| 19 |
Potassium |
K |
39.0983 |
| 20 |
Calcium |
Ca |
40.078 |
| 21 |
Scandium |
Sc |
44.955912 |
| 22 |
Titanium |
Ti |
47.867 |
| 23 |
Vanadium |
V |
50.9415 |
| 24 |
Chromium |
Cr |
51.9961 |
| 25 |
Manganese |
Mn |
54.938045 |
| 26 |
Iron |
Fe |
55.845 |
| 27 |
Cobalt |
Co |
58.933195 |
| 28 |
Nickel |
Ni |
58.6934 |
| 29 |
Copper |
Cu |
63.546 |
| 30 |
Zinc |
Zn |
65.409 |
| 31 |
Gallium |
Ga |
69.723 |
| 32 |
Germanium |
Ge |
72.64 |
| 33 |
Arsenic |
As |
74.92160 |
| 34 |
Selenium |
Se |
78.96 |
| 35 |
Bromine |
Br |
79.904 |
| 36 |
Krypton |
Kr |
83.798 |
| 37 |
Rubidium |
Rb |
85.4678 |
| 38 |
Strontium |
Sr |
87.62 |
| 39 |
Yttrium |
Y |
88.90585 |
| 40 |
Zirconium |
Zr |
91.224 |
| 41 |
Niobium |
Nb |
92.906 38 |
| 42 |
Molybdenum |
Mo |
95.94 |
| 43 |
Technetium |
Tc |
98.9063 |
| 44 |
Ruthenium |
Ru |
101.07 |
| 45 |
Rhodium |
Rh |
102.90550 |
| 46 |
Palladium |
Pd |
106.42 |
| 47 |
Silver |
Ag |
107.8682 |
| 48 |
Cadmium |
Cd |
112.411 |
| 49 |
Indium |
In |
114.818 |
| 50 |
Tin |
Sn |
118.710 |
| 51 |
Antimony |
Sb |
121.760 |
| 52 |
Tellurium |
Te |
127.60 |
| 53 |
Iodine |
I |
126.90447 |
| 54 |
Xenon |
Xe |
131.293 |
| 55 |
Caesium |
Cs |
132.9054519 |
| 56 |
Barium |
Ba |
137.327 |
| 57 |
Lanthanum |
La |
138.90547 |
| 58 |
Cerium |
Ce |
140.116 |
| 59 |
Praseodymium |
Pr |
140.90765 |
| 60 |
Neodymium |
Nd |
144.242 |
| 61 |
Promethium |
Pm |
146.9151 |
| 62 |
Samarium |
Sm |
150.36 |
| 63 |
Europium |
Eu |
151.964 |
| 64 |
Gadolinium |
Gd |
157.25 |
| 65 |
Terbium |
Tb |
158.92535 |
| 66 |
Dysprosium |
Dy |
162.500 |
| 67 |
Holmium |
Ho |
164.93032 |
| 68 |
Erbium |
Er |
167.259 |
| 69 |
Thulium |
Tm |
168.93421 |
| 70 |
Ytterbium |
Yb |
173.04 |
| 71 |
Lutetium |
Lu |
174.967 |
| 72 |
Hafnium |
Hf |
178.49 |
| 73 |
Tantalum |
Ta |
180.9479 |
| 74 |
Tungsten |
W |
183.84 |
| 75 |
Rhenium |
Re |
186.207 |
| 76 |
Osmium |
Os |
190.23 |
| 77 |
Iridium |
Ir |
192.217 |
| 78 |
Platinum |
Pt |
195.084 |
| 79 |
Gold |
Au |
196.966569 |
| 80 |
Mercury |
Hg |
200.59 |
| 81 |
Thallium |
Tl |
204.3833 |
| 82 |
Lead |
Pb |
207.2 |
| 83 |
Bismuth |
Bi |
208.98040 |
| 84 |
Polonium |
Po |
208.9824 |
| 85 |
Astatine |
At |
209.9871 |
| 86 |
Radon |
Rn |
222.0176 |
| 87 |
Francium |
Fr |
223.0197 |
| 88 |
Radium |
Ra |
226.0254 |
| 89 |
Actinium |
Ac |
227.0278 |
| 90 |
Thorium |
Th |
232.03806 |
| 91 |
Protactinium |
Pa |
231.03588 |
| 92 |
Uranium |
U |
238.02891 |
| 93 |
Neptunium |
Np |
237.0482 |
| 94 |
Plutonium |
Pu |
244.0642 |
| 95 |
Americium |
Am |
243.0614 |
| 96 |
Curium |
Cm |
247.0703 |
| 97 |
Berkelium |
Bk |
247.0703 |
| 98 |
Californium |
Cf |
251.0796 |
| 99 |
Einsteinium |
Es |
252.0829 |
| 100 |
Fermium |
Fm |
257.0951 |
| 101 |
Mendelevium |
Md |
258.0986 |
| 102 |
Nobelium |
No |
259.1009 |
| 103 |
Lawrencium |
Lr |
260.1053 |
| 104 |
Rutherfordium |
Rf |
261.1087 |
| 105 |
Dubnium |
Db |
262.1138 |
| 106 |
Seaborgium |
Sg |
263.1182 |
| 107 |
Bohrium |
Bh |
262.1229 |
| 108 |
Hassium |
Hs |
265 |
| 109 |
Meitnerium |
Mt |
266 |
| 110 |
Darmstadtium |
Ds |
269 |
| 111 |
Roentgenium |
Rg |
272 |
| 112 |
Ununbium |
Uub |
285 |
| 113 |
Ununtrium |
Uut |
284 |
| 114 |
Ununquadium |
Uuq |
289 |
| 115 |
Ununpentium |
Uup |
288 |
| 116 |
Ununhexium |
Uuh |
292 |
| 118 |
Ununoctium |
Uuo |
294 |
|
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