HHomeBackground Color:He
LiBeBlack White GrayBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg

Atomic Mass of the elements

Text lists sorted by: Value | Atomic Number | Alphabetical
Plots: Shaded | Ball | Crossed Line | Scatter | Sorted Scatter
Log scale plots: Shaded | Ball | Crossed Line | Scatter | Sorted Scatter
Good for this property: Scatter

Hydrogen1.008 Niobium92.90637 Thallium204.38
Helium4.002602 Molybdenum95.95 Lead207.2
Lithium6.94 Technetium97[note] Bismuth208.9804
Beryllium9.0121831 Ruthenium101.07 Polonium209[note]
Boron10.81 Rhodium102.9055 Astatine210[note]
Carbon12.011 Palladium106.42 Radon222[note]
Nitrogen14.007 Silver107.8682 Francium223[note]
Oxygen15.999 Cadmium112.414 Radium226[note]
Fluorine18.998403163 Indium114.818 Actinium227[note]
Neon20.1797 Tin118.71 Protactinium231.03588[note]
Sodium22.98976928 Antimony121.76 Thorium232.0377
Magnesium24.305 Iodine126.90447 Neptunium237[note]
Aluminum26.9815385 Tellurium127.6 Uranium238.02891
Silicon28.085 Xenon131.293 Americium243[note]
Phosphorus30.973761998 Cesium132.90545196 Plutonium244[note]
Sulfur32.06 Barium137.327 Curium247[note]
Chlorine35.45 Lanthanum138.90547 Berkelium247[note]
Potassium39.0983 Cerium140.116 Californium251[note]
Argon39.948 Praseodymium140.90766 Einsteinium252[note]
Calcium40.078 Neodymium144.242 Fermium257[note]
Scandium44.955908 Promethium145 Mendelevium258[note]
Titanium47.867 Samarium150.36 Nobelium259[note]
Vanadium50.9415 Europium151.964 Lawrencium262[note]
Chromium51.9961 Gadolinium157.25 Rutherfordium267[note]
Manganese54.938044 Terbium158.92535 Seaborgium269[note]
Iron55.845 Dysprosium162.5 Dubnium270[note]
Nickel58.6934 Holmium164.93033 Bohrium270[note]
Cobalt58.933194 Erbium167.259 Hassium270[note]
Copper63.546 Thulium168.93422 Meitnerium278[note]
Zinc65.38 Ytterbium173.045 Darmstadtium281[note]
Gallium69.723 Lutetium174.9668 Roentgenium281[note]
Germanium72.63 Hafnium178.49 Copernicium285[note]
Arsenic74.921595 Tantalum180.94788 Nihonium286[note]
Selenium78.971 Tungsten183.84 Flerovium289[note]
Bromine79.904 Rhenium186.207 Moscovium289[note]
Krypton83.798 Osmium190.23 Livermorium293[note]
Rubidium85.4678 Iridium192.217 Tennessine293[note]
Strontium87.62 Platinum195.084 Oganesson294[note]
Yttrium88.90584 Gold196.966569
Zirconium91.224 Mercury200.592


Notes on the Atomic Mass of particular elements:

Technetium: Atomic mass number given for longest lived isotope.

Polonium: Atomic mass number given for longest lived isotope.

Astatine: Atomic mass number given for longest lived isotope.

Radon: Atomic mass number given for longest lived isotope.

Francium: Atomic mass number given for longest lived isotope.

Radium: Atomic mass number given for longest lived isotope.

Actinium: Atomic mass number given for longest lived isotope.

Protactinium: Atomic mass number given for longest lived isotope.

Neptunium: Atomic mass number given for longest lived isotope.

Plutonium: Atomic mass number given for longest lived isotope.

Americium: Atomic mass number given for longest lived isotope.

Curium: Atomic mass number given for longest lived isotope.

Berkelium: Atomic mass number given for longest lived isotope.

Californium: Atomic mass number given for longest lived isotope.

Einsteinium: Atomic mass number given for longest lived isotope.

Fermium: Atomic mass number given for longest lived isotope.

Mendelevium: Atomic mass number given for longest lived isotope.

Nobelium: Atomic mass number given for longest lived isotope.

Lawrencium: Atomic mass number given for longest lived isotope.

Rutherfordium: Atomic mass number given for longest lived isotope.

Dubnium: Atomic mass number given for longest lived isotope.

Seaborgium: Atomic mass number given for longest lived isotope.

Bohrium: Atomic mass number given for longest lived isotope.

Hassium: Atomic mass number given for longest lived isotope.

Meitnerium: Atomic mass number given for longest lived isotope.

Darmstadtium: Atomic mass number given for longest lived isotope.

Roentgenium: Atomic mass number given for longest lived isotope.

Copernicium: Atomic mass number given for longest lived isotope.

Nihonium: Atomic mass number given for longest lived isotope.

Flerovium: Atomic mass number given for longest lived isotope.

Moscovium: Atomic mass number given for longest lived isotope.

Livermorium: Atomic mass number given for longest lived isotope.

Tennessine: Atomic mass number given for longest lived isotope.

Oganesson: Atomic mass number given for longest lived isotope.

Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc.

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Common Properties
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