"The \\(\\textit{Unified Atomic Mass Unit}\\) (symbol: \\(\\mu\\)) or \\(\\textit{dalton}\\) (symbol: Da) is a unit that is used for indicating mass on an atomic or molecular scale. It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state, and has a value of \\(1.660538782(83) \\times 10^{-27} kg\\). One \\(Da\\) is approximately equal to the mass of one proton or one neutron. The CIPM have categorised it as a \\(\\textit{\"non-SI unit whose values in SI units must be obtained experimentally\"}\\)."^^ . . "Atomic mass unit"@en . "D43" . "1.66054e-27"^^ . "http://en.wikipedia.org/wiki/Atomic_mass_unit"^^ . "amu" . "u" . "u"^^ . . . . . .