1.

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?

Answer»

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.


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