Oxidation state and overall charge
What Oxidation state and overall charge means in Chemistry A-Level, as defined for OCR.
Definition of Oxidation state and overall charge
Check what you remember
Read the wording for your board, then hide it and explain Oxidation state and overall charge in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Both ligands are neutral, so the overall charge stays 3⁺ and the chromium oxidation state remains +3 during ligand substitution.
Topics that use Oxidation state and overall charge
- Transition elements (OCR A-Level)
Related terms
- Balanced ionic equations for precipitation
- Balancing complex half-equations
- bidentate ligands
- Bidentate ligands giving octahedral complexes
- Bond angles and shape prediction
- Boundary cases scandium and zinc
- Calculating oxidation state from a formula
- Catalytic behaviour of transition metals and their compounds
Using Oxidation state and overall charge 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