Question

HOW TO FIND *OXIDATION* number give brief .. i give u more points ...

Answer 1

Explanation:-
1.Oxidation number of free element is always zero.
2. Oxidation number of monatomic iron is equal to the charge of the iron.
3. Oxidation number of hydrogen is + 1 but it is -1 when it is combined with less electronegative species, it can also be zero.
4. Oxidation number of oxygen in many compounds is usually -2, but it is -1 in peroxides.
5. Oxidation number of group first elements is + 1.
6. Oxidation number of group second element is +2.
7. Oxidation number of group 17 element in a binary compound is -1.
8. The sum of all oxidation numbers in a neutral compound is zero.
9. The sum of oxidation number in Apollo to make iron is equal to the charge of ion.
e.g.CrCl3=0
Oxidation number of CL is -1 and there are is 3cl then it is -3.
Cr-3=0
Cr=+3

Answer 2

The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of O in compounds is usually -2, but it is -1 in peroxides. The oxidation number of a Group 1 element in a compound is +1.