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Electron configuration — OCR GCSE Combined Science A Definition

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Combined Science
Key terms
Electron configuration

GCSE Combined Science · key term

Electron configuration

Definition

The arrangement of an atom’s electrons in shells, often written as numbers such as 2,8,1.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science A · J250

Specification C2.2h, C4.1b · Chemistry Paper 1, Chemistry Paper 2

Revise: Reactions and Electron Arrangement
The arrangement of electrons in an atom or ion. For example, sodium has the shell arrangement 2,8,1.
Revise: Electron Shells and Group Trends

OCR Combined Science A past papers

Related key terms

Ion
Outer shell
Atomic number
Group
Intermolecular force

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