All noble gasses have 8 valence electrons, it is what makes them "stable" and therefore are non reactive.
a filled highest occupied principal energy level
Elements in group 8A of the periodic table, known as the noble gases, do not readily form chemical bonds because they have a fully occupied valence shell of electrons. This stable electron configuration makes them highly unreactive, as they do not have a tendency to gain, lose, or share electrons with other elements. Consequently, noble gases exist as monoatomic gases and are generally chemically inert.
Noble gases
The elements that have highest occupied s and p sublevels partially filled are called the representative elements. These include Groups I and II and the last six groups on the right of the periodic table.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
The valence electron shell of noble gases is full.
they are all completely filled in the case of noble gases
a filled highest occupied principal energy level
All of the Nobel gases do (He Ne Ar Kr Xe and Rn)
Krypton belongs in the noble gases group because it has a full valence shell of electrons, making it stable and unreactive. It does not readily form compounds with other elements due to its stable electron configuration, similar to other noble gases.
Elements in group 8A of the periodic table, known as the noble gases, do not readily form chemical bonds because they have a fully occupied valence shell of electrons. This stable electron configuration makes them highly unreactive, as they do not have a tendency to gain, lose, or share electrons with other elements. Consequently, noble gases exist as monoatomic gases and are generally chemically inert.
Another word for a noble gas is an inert gas. These elements have the maximum electrons in their highest energy level.
Noble gases
Neutral gases do not; ionized gases do.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Radon gas has the highest density among all gases.
The elements that have highest occupied s and p sublevels partially filled are called the representative elements. These include Groups I and II and the last six groups on the right of the periodic table.