relative isotopic mass
What relative isotopic mass means in Chemistry A-Level, as defined for AQA, OCR.
Definitions of relative isotopic mass
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Reference: AQA
The mass of one atom of that isotope compared with one-twelfth the mass of an atom of carbon-12.
The mass of one isotope's atom compared with one-twelfth of the mass of a ¹²C atom.
Topics that use relative isotopic mass
- Mass number and isotopes (AQA A-Level)
- Atomic structure and isotopes (OCR A-Level)
Related terms
- atomic number
- isotopes
- mass number
- abundance ratios
- acceleration to constant kinetic energy
- base peak
- Calculation accuracy
- carbon-13 satellite
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