BRAINCAKESize of Atoms
The atomic radius increases down the group as each atom has an extra filled main level compared with the one above.
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Key terms in this lesson
- Atomic radius
- A measure of the size of an atom, found by measuring the distance between two adjacent nuclei and dividing by two.
- Group
- A vertical column of the periodic table, containing elements with the same number of outer-shell electrons.
More in Group 7
- Halogens
- Physical Properties
- Electronegativity
- Melting and Boiling Points
- Trends in Oxidising Ability
- Displacement Reactions
- Halide Ions as Reducing Agents
- Sodium Chloride with Sulfuric Acid
All 16 lessons in Group 7 · All AQA AS-level Chemistry topics