Question

hello it's very important .
what is oxidation number
thanks for your kind help​

Answer 1

Answer:

number assigned to an element in chemical combination which represents the number of electrons lost (or gained, if the number is negative), by an atom of that element in the compound.

Answer 2

Answer:

The oxidation number of an atom is the charge it appears to have when you count the electrons according to some arbitrary rules. The oxidation number of an atom depends on the other atoms in the substance. For example, ... In KClO, the oxidation number of Cl is +1. In KClO₂, the oxidation number of Cl is +3