GCSE Chemistry · key term

Radius

Definition

The distance from the centre of a sphere or approximately spherical object to its edge.

Used by Edexcel

Specification 1.5 · Paper 1, Paper 2

Equivalently, the nuclear radius is about one ten-thousandth of the atomic radius.
Revise: Nucleus Size

1
When comparing the quoted radii, show that $10^{-10} \div 10^{-14}=10^4$ , so the atomic radius is about 10,000 times the nuclear radius.

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GCSE Chemistry · key term

The distance from the centre of a sphere or approximately spherical object to its edge.

Used by Edexcel

Specification 1.5 · Paper 1, Paper 2

Equivalently, the nuclear radius is about one ten-thousandth of the atomic radius.
Revise: Nucleus Size

1
When comparing the quoted radii, show that $10^{-10} \div 10^{-14}=10^4$ , so the atomic radius is about 10,000 times the nuclear radius.

Create a free account to read GCSE Chemistry revision notes for your exam board and track your progress.