Chemistry GCSE
Atomic (proton) number
What Atomic (proton) number means in Chemistry GCSE, as defined for AQA.
Definition of Atomic (proton) number
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Reference: AQA
The number of protons in the nucleus, which equals the number of electrons in a neutral atom.
Topics that use Atomic (proton) number
- The periodic table (AQA GCSE)
Related terms
- Atomic number
- groups
- Ion formation
- Outer shell electrons
- Prediction from patterns
- Reactivity trends
- Atomic number ordering
- Group
Using Atomic (proton) number in the exam
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