Why do you need to use roman numeral with the charge of a transition metal in formulas? why do you not do this for other elements?
this literally was never in my lessons and i am so

This is indicated by assigning a Roman numeral after the metal. The Roman numeral denotes the charge and the oxidation state of the transition metal ion. For example, iron can form two common ions, Fe2+ and Fe3+. To distinguish the difference, Fe2+ would be named iron (II) and Fe3+ would be named iron (III)

Explanation:

The charge on a transition metal atom is equal to its oxidation state and can vary from +1 to +7. Transition metals can lose electrons more readily than other elements because they have unstable electrons in their outer orbitals.                                   btw theres a thing call google but meh free points for me :D. Brainliest?

Transition metal compounds have a positive transition metal ion, and a negative anion.

Transition metals can form more than one ion. The form of the ion that is present is then presented by using the roman numerals to indicate their positive charge.