The oxidation number of an element in a compound is evaluated on the basis of certain rules. Whichof the following rules is not correct in this respect?

Class 12 Chemistry in Class 12 . 3 years ago

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1. The oxidation number of hydrogen is always +1.
2. The algebraic sum of all the oxidation numbers in a COMPOUND is zero.
3. An ELEMENT in the FREE or the uncombined STATE BEARS oxidation number zero.
4. In all its compounds , the oxidation number of fluorine is - 1 .

Solution :O.N of hydrogen is not always +1 . The O.N. of hydrogen in hydrides is - 1 and in `H_(2)` it is zero.

Posted on 04 Dec 2021, this text provides information on Class 12 related to Chemistry in Class 12. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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