Chemistry A-Level
Sub-shells
What Sub-shells means in Chemistry A-Level, as defined for OCR.
Definition of Sub-shells
Check what you remember
Read the wording for your board, then hide it and explain Sub-shells in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Each shell is divided into these, and which ones are available depends on n, so shell 1 has only 1s and shell 2 has 2s and 2p.
Topics that use Sub-shells
- Electron structure (OCR A-Level)
Related terms
- Atomic orbital
- Atomic orbitals
- Cations lose electrons, anions gain electrons
- Distinguishing capacity from filling order
- Electron capacity of s-, p- and d-sub-shells
- Electron configuration
- Fixed number of orbitals per sub-shell
- Ion electron configurations
Using Sub-shells in the exam
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