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| 1. |
Rules of oxidation number??? ??? |
| Answer» Thanks<br>Rules:\tOxidation number of free element is always ZERO\tExample: The oxidation number of atoms in O2, H2 and N2 = 0\tThe oxidation number of Hydrogen is +1\tException: In Metal hydrides the oxidation state of hydrogen is -1\tThe Oxidation state of IA group elements = +1\tThe oxidation state of IIA group elements = +2\tThe oxidation number of IIIA group elements = +3\tThe oxidation state of Oxygen = -2\tException: The Peroxides and super oxides the oxidation state is -1, -1/2 respectively\tThe oxidation state of VIIA group elements = -1\tException: In inter halides the oxidation state will differs\tIn neutral compound the sum of oxidation numbers of all the atoms = 0\tIn polyatomic ions the sum of the oxidation number is equal to charge on the ion\tExample: Hydroxide ion (OH-) the oxidation number = -1 | |