1. Element Elements and Compounds Oxidation Number and Nomenclature Redox Reactions Compounds A compound is a substance composed of two or more elements, chemically combined with one another in a fixed proportion. Water, sugar, salt, carbon dioxide, methane etc are the examples of compounds. Objectives: Oxidation Number and Nomenclature of Metal Compounds. Equation of Redox Reaction.

2. Element Elements and Compounds Extraction of Sulphur Non-metals Compounds A compound is a substance composed of two or more elements, chemically combined with one another in a fixed proportion. Water, sugar, salt, carbon dioxide, methane etc are the examples of compounds. Mineral Coal and Mineral Oil Petroleum Structure of Atom Dual Nature of Matter and Radiation Stock Notation The oxidation number state of a metal in a compound is sometimes presented according to the notation given by German chemist, Alfred Stock. It is popularly known as Stock notation. Redox Reactions Oxidation Number and Nomenclature Alfred Stock Chemical FormulaeStock Notation FeOFe(II)O Fe 2 O 3 Fe(III)O CuOCu(II)O Cu 2 OCu(I)O

3. Element Elements and Compounds Extraction of Sulphur Non-metals Compounds A compound is a substance composed of two or more elements, chemically combined with one another in a fixed proportion. Water, sugar, salt, carbon dioxide, methane etc are the examples of compounds. Mineral Coal and Mineral Oil Petroleum Structure of Atom Dual Nature of Matter and Radiation Nomenclature of Metal Compounds Redox Reactions Oxidation Number and Nomenclature Stock notation method is used in type of metals which have more than one oxidation states. Generally stock notation is used for metals but not for non metals.

4. Element Elements and Compounds Extraction of Sulphur Non-metals Compounds A compound is a substance composed of two or more elements, chemically combined with one another in a fixed proportion. Water, sugar, salt, carbon dioxide, methane etc are the examples of compounds. Mineral Coal and Mineral Oil Petroleum Structure of Atom Dual Nature of Matter and Radiation Equation of Redox Reaction General rules must be obeyed while showing redox reaction equation: Redox Reactions The law of conservation of mass must be obeyed. The number of atoms or elements on both the sides of equation should be the same. The molecular formulas of reactants and products must be known. All the electrons released during oxidation half reaction, should be used in the reduction half reaction that is, change of electron in the reaction, should be the same. Oxidation Number and Nomenclature

5. Element Elements and Compounds Extraction of Sulphur Non-metals Compounds A compound is a substance composed of two or more elements, chemically combined with one another in a fixed proportion. Water, sugar, salt, carbon dioxide, methane etc are the examples of compounds. Mineral Coal and Mineral Oil Petroleum Structure of Atom Dual Nature of Matter and Radiation Redox Reactions Equation of Redox Reaction General rules must be obeyed while showing redox reaction equation: For reactions in acidic medium the requirement of oxygen is fulfilled by using H 2 O and using H + for hydrogen. In basic medium the requirement of oxygen is fulfilled by H 2 O and OH - ions are used to fulfill requirement of hydrogen. Oxidation Number and Nomenclature