Question

An atoms likelihood of reacting with other atoms is highest in what group on the periodic table and lowest in what group on the periodic table

Answer 1

Atoms in Group 1 are highly reactive, while atoms in Group 18 are least reactive.

Step-by-step explanation:

The likelihood of an atom reacting with other atoms is highest in Group 1 (Group I) of the periodic table and lowest in Group 18 (Group VIII).

Atoms in Group 1, also known as the alkali metals (such as lithium and sodium), have only one electron in their outermost shell, making it easier for them to lose that electron and form positive ions.

On the other hand, atoms in Group 18, known as the noble gases (such as helium, neon, and argon), have a full outer shell and are therefore stable and less likely to react with other atoms.