Noble Gases Rare Gases
What is Noble Gases Rare Gases?
Noble gases (Group 18/VIII A) are the elements helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn), characterized by complete valence electron shells that confer exceptional chemical stability and very low reactivity. Under standard conditions they are colorless, odorless, tasteless monatomic gases with very low boiling points. Although long considered completely inert, heavier noble gases (Xe, Kr) can form compounds with strongly electronegative elements such as fluorine and oxygen.
Key Facts
Frequently Asked Questions
Noble gases (Group 18/VIII A) are the elements helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn), characterized by complete valence electron shells that confer exceptional chemical stability and very low reactivity. Under standard conditions they are colorless, odorless, tasteless monatomic gases with very low boiling points. Although long considered completely inert, heavier noble gases (Xe, Kr) can form compounds with strongly electronegative elements such as fluorine and oxygen.