variable oxidation states
What variable oxidation states means in Chemistry A-Level, as defined for AQA.
Definition of variable oxidation states
Check what you remember
Read the wording for your board, then hide it and explain variable oxidation states in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Transition elements show this behaviour, in which more than one oxidation state is accessible.
Topics that use variable oxidation states
- Variable oxidation states (A-level only) (AQA A-Level)
Related terms
- 4s and 3d energies
- combining half-equations
- deducing oxidation states
- colour sequence
- half-equations in acid
- reduction by zinc
Using variable oxidation states 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