The collection of elements on the right side of the periodic table with electron sequetianlly filling the p orbitals of their valence shells are named noble gases.
The noble gases are in the group 18.
The last orbital of the noble gases are:
Gas last orbital
He 1s
Ne 2p6
Ar 3p6
Kr 4p6
Xe 5p6
Rn 6p6
As you see the p orbitals of the noble gases are complete. That is what confere them their great stability.
