There are six: helium, neon, argon, krypton, xenon and radon
gases
Noble gases have completely filled valence orbitals.
The noble gases
- organic or inorganic gases- common or noble gases- toxic or nontoxic gases- natural or artificial gasesetc.
There are 6 noble gases in periodic table. The common one is helium.
the noble gases have octet configuration ie they have 8 electrons in their outermost shell ,so they are stable
They are all noble gases.
Noble gases do not normally form compounds.
Because they do not interact with other elements and this led to the name Nobel as to classify them apart from other " common " elements.
Noble gases do not react chemically with other noble gases.
Most common use is in lighting.
inert gases / noble gases