Use the periodic table to answer the following 2 questions.
what group on the periodic table form cations with the same electronic configuration as Ar
List the group within group 18
The group on the periodic table that forms cations with the same electronic configuration as Ar (Argon) is Group 2, also known as the alkali earth metals. They form cations with a 2+ charge, similar to the electronic configuration of Argon.
Within Group 18 on the periodic table, also known as the noble gases, there is only one group.