Chemistry A-Level
orbital capacities
What orbital capacities means in Chemistry A-Level, as defined for AQA.
Definition of orbital capacities
Check what you remember
Read the wording for your board, then hide it and explain orbital capacities in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
An s sub-shell holds 2 electrons, p holds 6 and d holds 10, because each orbital takes two electrons of opposite spin.
Topics that use orbital capacities
- Electron configuration (AQA A-Level)
Related terms
- 4s before 3d
- First ionisation energy
- Group 2 trend
- ion configurations
- ionisation equations
- Period 3 trend
- sub-shell filling order
Using orbital capacities 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 Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Chemistry A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge