Input interpretation
double beta decay | atomic mass
Summary
median | 138.908231499 u highest | 256.09344 u (Cf-256) lowest | 45.953692587 u (Ca-46) distribution |
Units
Distribution plots
(atomic mass in unified atomic mass units)
Atomic mass rankings
1 | Ca-46 | 45.953692587 u 2 | Ca-48 | 47.952534177 u 3 | Zn-70 | 69.925319274 u 4 | Ge-76 | 75.921402557 u 5 | Se-80 | 79.916521271 u 6 | Se-82 | 81.916699401 u 7 | Kr-86 | 85.910610729 u 8 | Zr-94 | 93.906315192 u 9 | Zr-96 | 95.908273386 u 10 | Mo-98 | 97.905408169 u ⋮ | | 33 | Hg-204 | 203.973493933 u 34 | Po-216 | 216.001915035 u 35 | Rn-220 | 220.011393981 u 36 | Ra-226 | 226.025409823 u 37 | Th-232 | 232.038055325 u 38 | U-238 | 238.050788247 u 39 | Pu-244 | 244.064203907 u 40 | Cm-248 | 248.072348508 u 41 | Cf-254 | 254.087322909 u 42 | Cf-256 | 256.09344 u
Unit conversions for median atomic mass 138.908231499 u
138.908231499 Da (daltons)
0.138908231499 kDa (kilodaltons)
2.30662545×10^-22 grams
2.30662545×10^-25 kg (kilograms)
129.392198 GeV/c^2
138.9142 chemical atomic mass units (unit officially deprecated)
138.95239 physical atomic mass units (unit officially deprecated)
Comparisons for median atomic mass 138.908231499 u
≈ Higgs boson mass ( ≈ 125 GeV/c^2 )
≈ 1.4 × Z^0 boson mass ( ≈ 91 GeV/c^2 )
≈ 1.6 × W^(+/-) boson mass ( ≈ 80 GeV/c^2 )
Corresponding quantities
Relativistic energy E from E = mc^2: | 129 GeV (gigaelectronvolts)
Characteristic length L from L = h/(mc): | 9.6 am (attometers) | 9.6×10^-18 meters
Thermal de Broglie wavelength at 100 K from λ = h/(2πmkT)^(1/2): | 15 pm (picometers)
Characteristic time T from T = h/(mc^2): | 3.2×10^-26 seconds
Thermodynamic temperature T from kT = mc^2: | 1.502×10^15 K (kelvins)
Compton frequency ν from ν = mc^2/h: | 3.129×10^25 Hz (hertz)