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.
all the pure elements have zero oxidation state.....
Without being able to see part A, no one can answer your question.
Zero
The oxidation number of an atom in it's elemental state is always 0.
if you mean iodine in its elemental state, the the oxidation state is zero, as for any element in its elemental state, the oxidation state is always zero
zero
Zero The oxidation number of an element in its elemental form is always zero.
No as it doesn't as it doesn't form compounds. The only possible oxidation number is zero for elemental helium
Elemental Ar has an oxidation number of zero
The oxidation number of anything in elemental form is zero.
The oxidation number of an atom in it's elemental state is always 0.
if you mean iodine in its elemental state, the the oxidation state is zero, as for any element in its elemental state, the oxidation state is always zero
0 in the elemental form
zero
Zero The oxidation number of an element in its elemental form is always zero.
No as it doesn't as it doesn't form compounds. The only possible oxidation number is zero for elemental helium
Zero The oxidation number of an element in any of its elemental forms (allotropes) is always zero
The element is magnesium with +2 the oxidation number in its compounds and 0 in the elemental form
0 in elemental form +1 in its compounds
0 in elemental form and +3 in its compounds