Oxidation Number and Oxidation State Calculation
Calculating oxidation numbers and states in elements, compounds, ions, and special cases is essential for understanding redox changes and reaction mechanisms.
Why this shows up in the exam
You will be asked to assign and use oxidation numbers to analyze reactions and predict products in exams.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
The oxidation states not shown by Mn in given reaction is 3MnO₄²⁻ + 4H⁺ ⟶ 2MnO₄⁻ + MnO₂ + 2H₂O
Push further
More challenging6 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
In the reaction 2CrO₄²⁻ + 2H⁺ ⟶ Cr₂O₇²⁻ + H₂O, which oxidation state of chromium is NOT represented?
More from Redox Reactions
Definition and Types of Redox Reactions
Redox reactions are chemical processes involving oxidation and reduction, defined either by electron transfer or changes in oxidation number, and include special types like displacement and disproportionation reactions.
Oxidizing and Reducing Agents: Properties and Identification
Oxidizing and reducing agents are substances that accept or donate electrons, and their identification and comparative strengths are key to predicting reaction outcomes.
Balancing Redox Equations
Redox equations must be balanced using methods like the oxidation number method or the half-reaction method to ensure mass and charge conservation.