Groups of the periodic table
A)represent elements with the same outer electron configuration.
B)are horizontal.
C)represent elements with the same atomic density.
D)none of the above

Question

Quizplus · Accepted Answer

Groups of the periodic table represent elements with the same outer electron configuration. This means that they have similar chemical properties and react in similar ways. For example, Group 1 (alkali metals) all have one electron in their outer shell, which makes them highly reactive and easily lose that electron to form positive ions. Group 8 (noble gases) have a full outer shell, making them very stable and unreactive. Therefore, A is the correct choice.

Groups of the Periodic Table