Question

what is another name for the representative elements?
transition elements
group c elements
group a elements
group b elements

Explanation:

Representative elements are elements in groups 1, 2, and 13 - 18 of the periodic table. In the older IUPAC (International Union of Pure and Applied Chemistry) numbering system (which used Group A and Group B designations), these representative elements are known as Group A elements. Transition elements are in the d - block (Groups 3 - 12 in the modern numbering system), and there is no such thing as Group C elements in the standard periodic table group designations. Group B elements in the older system refer to transition elements.

Answer:

C. Group A elements