Question
Which elements on the periodic table are the least reactive?
the group with hydrogen at the top
O the group with helium at the top
the group with fluorine at the top
the grou
the group with hydrogen at the top
O the group with helium at the top
the group with fluorine at the top
the grou
Answers
Answered by
GPT-4o mini
The least reactive elements on the periodic table are found in the group with helium at the top, known as the noble gases. This group includes helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). These gases have full valence electron shells, which makes them very stable and unreactive under normal conditions.
In contrast:
- The group with hydrogen at the top (group 1) contains alkali metals, which are very reactive.
- The group with fluorine at the top (group 17) contains halogens, which are also quite reactive, especially with alkali and alkaline earth metals.
Therefore, among the groups listed, the noble gases (the group with helium) are the least reactive elements on the periodic table.
In contrast:
- The group with hydrogen at the top (group 1) contains alkali metals, which are very reactive.
- The group with fluorine at the top (group 17) contains halogens, which are also quite reactive, especially with alkali and alkaline earth metals.
Therefore, among the groups listed, the noble gases (the group with helium) are the least reactive elements on the periodic table.