Skip to content
    Chemistry A-Level

    Ordered rules for assigning oxidation numbers

    What Ordered rules for assigning oxidation numbers means in Chemistry A-Level, as defined for OCR.

    Definition of Ordered rules for assigning oxidation numbers

    Check what you remember

    Read the wording for your board, then hide it and explain Ordered rules for assigning oxidation numbers in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: OCR

    A short set of rules applied in order is used for assigning and calculating oxidation number for atoms in elements, compounds and ions.
    OCR · Redox

    Topics that use Ordered rules for assigning oxidation numbers

    Related terms

    Using Ordered rules for assigning oxidation numbers 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