oxidation state

iron (II) is written as Fe2+ or Fe+2.Is there a difference in this writting notation?

Oxidation number or oxidation state are same terms. ? please explain.

iron (II) is written as Fe2+ or Fe+2.Is there a difference in this writting notation?

Oxidation number or oxidation state are same terms. ? please explain.

(II) refers to ON. (+2) refers to OS. At Uni levels, slight difference. For A level purposes, they are equivalent.

2+ refers to dipositive ionic charge. So the dipositive Fe2+(aq) is an Fe(II) species.

There is no such thing as Fe+2, and Cambridge will penalize for writing such nonsense.

Example of such nonsense is seen in this '4x thumbs down' reply by 'Zhi Li', whose Chemistry Fail.