the "A" elements
Another name for a US Representative is a Congressman.
The representative elements are in the groups 1,2, 13-18; the name is given to make a difference toward transition metals.
Congressman .
republic
republic
Yes.
Yes, copper (Cu) is considered a representative element. Representative elements also called main-group elements, are the elements found in the s and p blocks of the periodic table. Copper is located in Group 11 and period 4 of the periodic table, making it a representative element.
Another name for Group 17 (VIIA) Elements is Halogens.
No, 3-12 elements on the periodic table (group 3 to group 12) are transition metals, not representative elements. Representative elements are found in groups 1 and 2, and 13 to 18 on the periodic table.
yes
Conventionally representative elements are called the chemical elements from the groups 1,2, 13-18. These elements haven't generally variable valencies. The transitions metals are not representative elements.
All of them. "Representative elements" means "representative of the group". A group which doesn't have any representative elements would be a largely meaningless group.Group-1, 2,13-18 include representative elements. Group-1 and 2 contain metals. Group 13-17 contain non metals. Group18 comprises of noble gases.