‹ Semua sifat
Atomic weight
Standard atomic weight of an element — the weighted average over natural isotopes. Shown with the uncertainty or the natural-variation interval; for elements without a standard value the mass number of the selected isotope is listed separately.
Minimum 1,007975 u Hydrogen
Maksimum 238,02891 u Uranium
Rata-rata 104,174365 u
Data tersedia 84 dari 118
| Simbol | Nama | ||||
|---|---|---|---|---|---|
| 1 | H | Hydrogen | 1,007975 | [1.00784; 1.00811] | 1,008 |
| 2 | He | Helium | 4,002602 | ± 0.000002 | — |
| 3 | Li | Lithium | 6,9675 | [6.938; 6.997] | 6,94 |
| 4 | Be | Beryllium | 9,012183 | ± 5e-7 | — |
| 5 | B | Boron | 10,8135 | [10.806; 10.821] | 10,81 |
| 6 | C | Carbon | 12,0106 | [12.0096; 12.0116] | 12,011 |
| 7 | N | Nitrogen | 14,006855 | [14.00643; 14.00728] | 14,007 |
| 8 | O | Oxygen | 15,9994 | [15.99903; 15.99977] | 15,999 |
| 9 | F | Fluorine | 18,998403 | ± 6e-9 | — |
| 10 | Ne | Neon | 20,1797 | ± 0.0006 | — |
| 11 | Na | Sodium | 22,989769 | ± 2e-8 | — |
| 12 | Mg | Magnesium | 24,3055 | [24.304; 24.307] | 24,305 |
| 13 | Al | Aluminum | 26,981538 | ± 7e-7 | — |
| 14 | Si | Silicon | 28,085 | [28.084; 28.086] | 28,085 |
| 15 | P | Phosphorus | 30,973762 | ± 5e-9 | — |
| 16 | S | Sulfur | 32,0675 | [32.059; 32.076] | 32,06 |
| 17 | Cl | Chlorine | 35,4515 | [35.446; 35.457] | 35,45 |
| 18 | Ar | Argon | 39,948 | [39.792; 39.963] | 39,948 |
| 19 | K | Potassium | 39,0983 | ± 0.0001 | — |
| 20 | Ca | Calcium | 40,078 | ± 0.004 | — |
| 21 | Sc | Scandium | 44,955908 | ± 0.000005 | — |
| 22 | Ti | Titanium | 47,867 | ± 0.001 | — |
| 23 | V | Vanadium | 50,9415 | ± 0.0001 | — |
| 24 | Cr | Chromium | 51,9961 | ± 0.0006 | — |
| 25 | Mn | Manganese | 54,938044 | ± 0.000003 | — |
| 26 | Fe | Iron | 55,845 | ± 0.002 | — |
| 27 | Co | Cobalt | 58,933194 | ± 0.000004 | — |
| 28 | Ni | Nickel | 58,6934 | ± 0.0004 | — |
| 29 | Cu | Copper | 63,546 | ± 0.003 | — |
| 30 | Zn | Zinc | 65,38 | ± 0.02 | — |
| 31 | Ga | Gallium | 69,723 | ± 0.001 | — |
| 32 | Ge | Germanium | 72,63 | ± 0.008 | — |
| 33 | As | Arsenic | 74,921595 | ± 0.000006 | — |
| 34 | Se | Selenium | 78,971 | ± 0.008 | — |
| 35 | Br | Bromine | 79,904 | [79.901; 79.907] | 79,904 |
| 36 | Kr | Krypton | 83,798 | ± 0.002 | — |
| 37 | Rb | Rubidium | 85,4678 | ± 0.0003 | — |
| 38 | Sr | Strontium | 87,62 | ± 0.01 | — |
| 39 | Y | Yttrium | 88,90584 | ± 0.00002 | — |
| 40 | Zr | Zirconium | 91,224 | ± 0.002 | — |
| 41 | Nb | Niobium | 92,90637 | ± 0.00002 | — |
| 42 | Mo | Molybdenum | 95,95 | ± 0.01 | — |
| 43 | Tc | Technetium | [98] | — | — |
| 44 | Ru | Ruthenium | 101,07 | ± 0.02 | — |
| 45 | Rh | Rhodium | 102,9055 | ± 0.00002 | — |
| 46 | Pd | Palladium | 106,42 | ± 0.01 | — |
| 47 | Ag | Silver | 107,8682 | ± 0.0002 | — |
| 48 | Cd | Cadmium | 112,414 | ± 0.004 | — |
| 49 | In | Indium | 114,818 | ± 0.001 | — |
| 50 | Sn | Tin | 118,71 | ± 0.007 | — |
| 51 | Sb | Antimony | 121,76 | ± 0.001 | — |
| 52 | Te | Tellurium | 127,6 | ± 0.03 | — |
| 53 | I | Iodine | 126,90447 | ± 0.00003 | — |
| 54 | Xe | Xenon | 131,293 | ± 0.006 | — |
| 55 | Cs | Cesium | 132,905452 | ± 6e-8 | — |
| 56 | Ba | Barium | 137,327 | ± 0.007 | — |
| 57 | La | Lanthanum | 138,90547 | ± 0.00007 | — |
| 58 | Ce | Cerium | 140,116 | ± 0.001 | — |
| 59 | Pr | Praseodymium | 140,90766 | ± 0.00002 | — |
| 60 | Nd | Neodymium | 144,242 | ± 0.003 | — |
| 61 | Pm | Promethium | [145] | — | — |
| 62 | Sm | Samarium | 150,36 | ± 0.02 | — |
| 63 | Eu | Europium | 151,964 | ± 0.001 | — |
| 64 | Gd | Gadolinium | 157,25 | ± 0.03 | — |
| 65 | Tb | Terbium | 158,92535 | ± 0.00002 | — |
| 66 | Dy | Dysprosium | 162,5 | ± 0.001 | — |
| 67 | Ho | Holmium | 164,93033 | ± 0.00002 | — |
| 68 | Er | Erbium | 167,259 | ± 0.003 | — |
| 69 | Tm | Thulium | 168,93422 | ± 0.00002 | — |
| 70 | Yb | Ytterbium | 173,054 | ± 0.01 | — |
| 71 | Lu | Lutetium | 174,9668 | ± 0.0001 | — |
| 72 | Hf | Hafnium | 178,49 | ± 0.02 | — |
| 73 | Ta | Tantalum | 180,94788 | ± 0.00002 | — |
| 74 | W | Tungsten | 183,84 | ± 0.01 | — |
| 75 | Re | Rhenium | 186,207 | ± 0.001 | — |
| 76 | Os | Osmium | 190,23 | ± 0.03 | — |
| 77 | Ir | Iridium | 192,217 | ± 0.003 | — |
| 78 | Pt | Platinum | 195,084 | ± 0.009 | — |
| 79 | Au | Gold | 196,966569 | ± 0.000005 | — |
| 80 | Hg | Mercury | 200,592 | ± 0.003 | — |
| 81 | Tl | Thallium | 204,3835 | [204.382; 204.385] | 204,38 |
| 82 | Pb | Lead | 207,2 | [206.14; 207.94] | 207,2 |
| 83 | Bi | Bismuth | 208,9804 | ± 0.00001 | — |
| 84 | Po | Polonium | [209] | — | — |
| 85 | At | Astatine | [210] | — | — |
| 86 | Rn | Radon | [222] | — | — |
| 87 | Fr | Francium | [223] | — | — |
| 88 | Ra | Radium | [226] | — | — |
| 89 | Ac | Actinium | [227] | — | — |
| 90 | Th | Thorium | 232,0377 | ± 0.0004 | — |
| 91 | Pa | Protactinium | 231,03588 | ± 0.00002 | — |
| 92 | U | Uranium | 238,02891 | ± 0.00003 | — |
| 93 | Np | Neptunium | [237] | — | — |
| 94 | Pu | Plutonium | [244] | — | — |
| 95 | Am | Americium | [243] | — | — |
| 96 | Cm | Curium | [247] | — | — |
| 97 | Bk | Berkelium | [247] | — | — |
| 98 | Cf | Californium | [251] | — | — |
| 99 | Es | Einsteinium | [252] | — | — |
| 100 | Fm | Fermium | [257] | — | — |
| 101 | Md | Mendelevium | [258] | — | — |
| 102 | No | Nobelium | [259] | — | — |
| 103 | Lr | Lawrencium | [262] | — | — |
| 104 | Rf | Rutherfordium | [267] | — | — |
| 105 | Db | Dubnium | [268] | — | — |
| 106 | Sg | Seaborgium | [271] | — | — |
| 107 | Bh | Bohrium | [270] | — | — |
| 108 | Hs | Hassium | [270] | — | — |
| 109 | Mt | Meitnerium | [278] | — | — |
| 110 | Ds | Darmstadtium | [281] | — | — |
| 111 | Rg | Roentgenium | [282] | — | — |
| 112 | Cn | Copernicium | [285] | — | — |
| 113 | Nh | Nihonium | [286] | — | — |
| 114 | Fl | Flerovium | [289] | — | — |
| 115 | Mc | Moscovium | [289] | — | — |
| 116 | Lv | Livermorium | [293] | — | — |
| 117 | Ts | Tennessine | [294] | — | — |
| 118 | Og | Oganesson | [294] | — | — |
Sumber dan catatan
- Elements without a standard atomic weight (no stable or long-lived natural isotopes) show the mass number of the selected isotope in square brackets and are excluded from the average.