The oxidation number is 0. The sum of all oxidation number in a molecule that has not charge is always 0. If it has a charge (ion negative or positive) then the sum must be equal to the charge number.
The oxidation number of oxygen in K2O2 is -1. Each oxygen atom in peroxide (O2^2-) has an oxidation number of -1.
The overall oxidation number is -2 so the average oxidation number of O is -1.
Oxidation state of O is -2.Oxidation state of S is +4.
6. This is because it is a peroxide, with a structure Cr(O)(O2)2, where the nominal ligands are O2- (-2 ox.number in oxides) and O22- (-1 ox.number in peroxides) which gives the Cr an oxidation number of +6. It is sometimes called Chromium(VI) oxide peroxide.
+3 for Al and -2 for O is the oxidation number for Al2O3.
The oxidation number of O in any elemental form (e.g. O2, O3) is zero. Typically in chemical compounds the oxidation number of O is -2 (oxide ion)
The oxidation number of oxygen in K2O2 is -1. Each oxygen atom in peroxide (O2^2-) has an oxidation number of -1.
The overall oxidation number is -2 so the average oxidation number of O is -1.
Oxidation state of O is -2.Oxidation state of S is +4.
No, the oxidation number of oxygen in ozone (O3) is -2/3, while in oxygen (O2) it is 0. In ozone, one oxygen atom has an oxidation number of -1 and the other two have an oxidation number of 0, resulting in an average oxidation number of -2/3.
6. This is because it is a peroxide, with a structure Cr(O)(O2)2, where the nominal ligands are O2- (-2 ox.number in oxides) and O22- (-1 ox.number in peroxides) which gives the Cr an oxidation number of +6. It is sometimes called Chromium(VI) oxide peroxide.
+3 for Al and -2 for O is the oxidation number for Al2O3.
The oxidation number of any element by itself is 0.
The oxidation number for Na in NaOH is +1. This is because in NaOH, oxygen has an oxidation number of -2, and hydrogen has an oxidation number of +1. Therefore, the oxidation number of Na must be +1 to balance the charges and make the compound neutral.
In the compound O2PtF6, oxygen has an oxidation number of -1. This is because fluorine is more electronegative than oxygen and is assigned an oxidation number of -1. Since there are two fluorine atoms in the compound, the total oxidation number contributed by fluorine is -2. Therefore, the oxidation number of oxygen must be -1 to balance the overall charge of the compound, which is 0.
-2 or -1,depends on the molecule,but usually it's -2.
Typically in compounds it is -2 (oxide ion) - other values include zero (in O2 and O3)