What is oxidation number and how it can be used in balancing chemical reactions. Explain with example
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⏩a number assigned to an element in chemical combination which represents the number of electrons lost (or gained, if the number is negative), by an atom of that element in the compound.
examples::: H2O2 = H2O + O2Ca + Cl2 = CaCl2Cu + HNO3 = Cu2+ + NOSCN- + O2 = SO42- + HCO3- + NO3-Zn + HNO3 = Zn(NO3)2 + NH4NO3Fe2O3 + CO = Fe + CO2
⏩a number assigned to an element in chemical combination which represents the number of electrons lost (or gained, if the number is negative), by an atom of that element in the compound.
examples::: H2O2 = H2O + O2Ca + Cl2 = CaCl2Cu + HNO3 = Cu2+ + NOSCN- + O2 = SO42- + HCO3- + NO3-Zn + HNO3 = Zn(NO3)2 + NH4NO3Fe2O3 + CO = Fe + CO2
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