ChemistryFundamental ConceptNCTB রসায়ন অধ্যায় ৭ (রাসায়নিক বিক্রিয়া - রেডক্স)
Oxidation State
Bengali: জারণ সংখ্যা•Pronunciation: অক্সিডেশন স্টেট•Symbol: \text{Ox. No.}
Standard Definition:
The hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic.
📐 Mathematical Equation, Units & Dimensions
Defining Mathematical Equation
Standard SI Unit
Signed integer or fraction(চিহ্নযুক্ত পূর্ণসংখ্যা বা ভগ্নাংশ)
Dimensional Analysis
CGS Unit
None
📖 Physical Concept & Comprehensive Explanation
Oxidation numbers track electron bookkeeping in redox reactions. Oxidation corresponds to an increase in oxidation state (loss of electrons), whereas reduction denotes a decrease (gain of electrons).
🎯 High-Yield Revision Points
- ✓Pure uncombined elements have zero oxidation state.
- ✓The sum of oxidation numbers in neutral compounds equals zero.
- ✓Increase in oxidation number = oxidation; decrease = reduction.
Use Online Solver for Oxidation State
Compute step-by-step solutions, verify formulas, and plot interactive diagrams on biggan.me.
❓ Frequently Asked Exam Questions (FAQ)
Common questions in board and competitive entrance examinations
Q1: What is the oxidation number of Mn in KMnO4?
Setting 1 + x + 4(-2) = 0 yields x = +7 for Manganese.