an electron is about 1/1836 amu.
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slightly more than 14, carbon 12 has an atomic mass of 12 by definition, so 1 atomic mass = the sum of the mass of a proton neutron and electron divided by 2 neutrons are slightly heavier than the combined mass of an electron and proton carbon 14 has a higher percentage neutrons than carbon 12 so it is heavier relative to the number of particles in it's nucleus(14)
The atomic mass is the mass of a molecule, atomic particle or sub-atomic particle.
== The equation of atomic mass is protons+nuetrons== atomic mass. ===
Cobalt is an atomic mass of 58.93 atomic mass units
One-twelfth the mass of a carbon-12 atom or 1,660538921(73)×10−27 kg.the mass of an electron