Question

what are the rules for assingning oxidation number​

Answer 1

Answer:

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Rules for Assigning Oxidation Numbers to Elements

Rule 1: The oxidation number of an element in its free (uncombined) state is zero — for example, Al(s) or Zn(s). ...

Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion, for example:

Rule 3: The sum of all oxidation numbers in a neutral compound is zero.

Answer 2

Explanation:

Rule 1: The oxidation number of an element in its free (uncombined) state is zero — for example, Al(s) or Zn(s). ...

Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion, for example:

Rule 3: The sum of all oxidation numbers in a neutral compound is zero.

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