* Helium (He)
* Neon (Ne)
* Argon (Ar)
* Krypton (Kr)
* Xenon (Xe)
* Radon (Rn)
Why don't noble gases form compounds?
Noble gases have a full outer shell of electrons, making them very stable and unreactive. They have no tendency to gain, lose, or share electrons to form chemical bonds. This is why they are called "inert gases".
Exceptions:
While noble gases are generally unreactive, there are some exceptions:
* Xenon and krypton can form compounds with highly electronegative elements like fluorine and oxygen under specific conditions.
* Radon is radioactive and has a short half-life, so its reactivity is not well-studied.
Therefore, while the term "inert gases" isn't entirely accurate, noble gases are still considered to be the elements that do not ordinarily form compounds.
