Roman numerals as oxidation numbers
What Roman numerals as oxidation numbers means in Chemistry A-Level, as defined for OCR.
Definition of Roman numerals as oxidation numbers
Check what you remember
Read the wording for your board, then hide it and explain Roman numerals as oxidation numbers in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A Roman numeral in brackets after the element name states the oxidation number of that element in that particular species.
Topics that use Roman numerals as oxidation numbers
- Redox (OCR A-Level)
Related terms
- Calculating an unknown value from known contributions
- Deducing formulae from stated oxidation numbers
- Disproportionation
- Distinguishing compounds of the same element
- Electron transfer
- Half-equations
- Ordered rules for assigning oxidation numbers
- Oxidation
Using Roman numerals as 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.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge