The oxidation number of an element in a compound is evaluated on the basis of certain rules. Whi...

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The oxidation number of an element in a compound is evaluated on the basis of certain rules. Which of the following rules is not correct in this respect?
(A) The oxidation number of hydrogen is always \( +1 \)
(B) The algebraic sum of all the oxidation numbers in a compound is zero.
(C) An element in the free or the uncombined state bears oxidation number zero,
(D) In all its compounds, the oxidation number of fluorine is \( -1 \).
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