What is the least reactive element?

Understand the Problem

The question is asking about the element that has the least reactivity among all chemical elements. This could involve discussing the noble gases or other elements known for their low reactivity.

More Information

Helium is the least reactive element because it has a full valence shell, making it extremely stable and inert.

Tips

Common mistakes include confusing reactivity of metals and non-metals, or not differentiating between families on the periodic table.

Sources

• What's Least reactive substance in the world? : r/chemistry - Reddit - reddit.com
• What is the least reactive element on the periodic table of elements? - quora.com
• 2.4: The periodic table - Chemistry LibreTexts - chem.libretexts.org