Question

How to calculate oxidation state of all elements?

Answer 1

By its valence electron you can easily calculate it and by the hit and trial method you can calculate it

Answer 2

Hi frnd,

The oxidation number of a free element is always 0.

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.

The oxidation number of a Group 2 element in a compound is +2.

The oxidation number of a Group 17 element in a binary compound is -1.

The sum of the oxidation numbers of all of the atoms in a neutral compound is 0.

The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.