Question

how are transition metals named in metal compounds?
a. a roman numeral in parentheses follows the name of the metal.
b. a prefix is used in the name of the metal to indicate its oxidation state.
c. the name of the metal is followed by a superscript, which indicates charge.
d. the name of the metal is followed by a subscript, which indicates charge.

Explanation:

Transition metals often have multiple oxidation states. In naming metal compounds, a roman numeral in parentheses is used after the metal name to indicate its oxidation state. For example, in iron(III) oxide, the (III) indicates the + 3 oxidation state of iron.

Answer:

A. A roman numeral in parentheses follows the name of the metal.