What is the oxidation number of an elemental material?

Answer 1

For any element before reaction, its oxidation number is 0. Molecules made from the atoms of the same element have 0 oxidation state in each atom. Examples are gaseous hydrogen and liquid bromine.

Answer 2

The oxidation number of an elemental material is always 0 since there is no transfer of electrons between the same type of atoms in a pure element. Each atom in the elemental material has an equal sharing of electrons, resulting in a zero overall charge.

Answer 3

all the pure elements have zero oxidation state.....

Answer 4

Without being able to see part A, no one can answer your question.

Answer 5

Zero