Question

why dont we write roman numeral charges for representative elements? representative elements can have two or more different charges; transition metals can only have one charge. representative elements can only have one charge; transition metals can have two or more different charges. representative elements are too complex to predict their charges; transition metal charges are more predictable.

Explanation:

Representative elements typically have only one common charge which can be predicted from their group number in the periodic table. Transition metals often have multiple possible charges, so Roman numerals are used to indicate the specific charge in compounds.

Answer:

Representative elements can only have one charge; transition metals can have two or more different charges.