Question

Which elements need roman numerals? What are the exceptions?

A) Transition metals; there are no exceptions
B) Nonmetals; there are no exceptions
C) Alkali metals; all of them are exceptions
D) Noble gases; there are no exceptions

Answer 1

Transition metals require roman numerals to represent their oxidation state in chemistry, but there are some exceptions.

Step-by-step explanation:

In chemistry, roman numerals are used to represent the oxidation state of transition metals. Transition metals are elements found in groups 3-12 of the periodic table. They include elements such as iron (Fe), copper (Cu), and chromium (Cr). The oxidation state of a transition metal can vary, so roman numerals are used to indicate the specific oxidation state.

Exceptions to this rule include the transition metals in group 11, which include copper (Cu), silver (Ag), and gold (Au). These transition metals typically only have one oxidation state, so the use of roman numerals is not necessary.