3.1.2.1 Relative Atomic Mass and Relative Formula Mass
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6 Terms
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Relative atomic mass
The average mass of one atom compared to one twelfth of the mass of one atom of carbon-12
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Relative molecular mass
The average mass of a molecule compared to one twelfth of the mass of one atom of carbon-12
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Relative formula mass
The average mass of an entity (usually an ionic compound) divided by 1/12th the mass of an atom of C-12
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Symbol for relative atomic mass
Ar
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Symbol for relative molecular mass
Mr
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Symbol for relative formula mass
Mr
Note 
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