Outer shell electrons
What Outer shell electrons means in Chemistry GCSE, as defined for AQA.
Definitions of Outer shell electrons
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Reference: AQA
Group 7 atoms have seven electrons in their outer shell, so each needs to gain one electron to achieve a stable noble gas configuration.
The electrons in the outermost shell, which are the same in number for elements within a group.
Topics that use Outer shell electrons
- Group 7 (AQA GCSE)
- The periodic table (AQA GCSE)
Related terms
- Atomic number
- Diatomic molecules
- Displacement reactions
- Group 7 reactivity
- Group 7 trends
- groups
- Halide salts
- Halogens
Using Outer shell electrons in the exam
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