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What is meant by Unified Atomic Mass

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Instead of relative atomic mass, it is now possible to determine atomic masses in kg.  The Unified Atomic Mass Unit or Dalton is a standard unit of mass that quantifies mass on an atomic or molecular scale.

  • One unified atomic mass unit is approximately equivalent to 1g/mol.
  • It is denoted by a symbol :1u or Da = 1.66053904 x 10-27 kg

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