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GCSE Combined Science · key term
The distance between the nuclei of two bonded atoms.
Used by OCR
Specification C1.2c · Chemistry Paper 1
Revise: Size of Atoms and MoleculesA bond length is different: it is the distance between the nuclei of two bonded atoms. It describes their separation, not the full width of the molecule.
Check whether a question asks for radius, diameter or bond length. A diameter is twice the radius; bond length is measured between the centres of bonded atoms.
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