Chemistry GCSE
Isotope notation
What Isotope notation means in Chemistry GCSE, as defined for AQA.
Definition of Isotope notation
Check what you remember
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Reference: AQA
The mass number is written as a superscript before the element symbol, such as ²³Na.
Topics that use Isotope notation
- Size and mass of atoms (AQA GCSE)
Related terms
- Relative mass of subatomic particles
- Standard form and unit conversion
- Atomic dimensions in metres
- Mass number calculation
- Nanometres as a unit of length
- Nucleus as the mass centre
- Scale and size of atoms
Using Isotope notation in the exam
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