Skip to content
    Chemistry A-Level

    bond length and strength

    What bond length and strength means in Chemistry A-Level, as defined for AQA, OCR.

    Definitions of bond length and strength

    Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.

    Check what you remember

    Read the wording for your board, then hide it and explain bond length and strength in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    More shared electrons mean a stronger attraction to both nuclei, so multiple bonds are shorter and stronger than single bonds between the same two atoms.
    AQA · Nature of covalent and dative covalent bonds (study guide)
    Multiple bonds are shorter and stronger than the corresponding single bond between the same atoms.
    OCR · Bonding and structure

    Topics that use bond length and strength

    Related terms

    Using bond length and strength in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Chemistry questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Chemistry A-Level terms