Nucleon number
What Nucleon number means in Physics A-Level, as defined for AQA, OCR.
Definitions of Nucleon number
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Nucleon number in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The total number of nucleons (protons plus neutrons), not the proton number.
The total number of protons and neutrons in a nucleus.
The total number of protons and neutrons.
Topics that use Nucleon number
- Constituents of the atom (AQA A-Level)
- The nuclear atom (OCR A-Level)
Related terms
- Isotopes
- Proton number
- Atomic and nuclear density
- Atomic and nuclear dimensions
- Atomic structure
- Charge and neutrality
- Evidence from scattering
- Force-separation relationship
Using Nucleon number in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge