Noble gases are also known as the inert gases, meaning they don't react because they have a stable octet (eight electrons in their valence shell). They all have eight electrons in their valence shell with the exception of helium because helium is rebel, but they are all nonreactive including helium.
Valence electrons are electrons in the outermost shell (or outermost energy level or outermost orbital) in an atom. Noble gases have 8 valence electrons. But helium (a noble gas) has only 2 valence electrons.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
All the noble gases have 8 electrons in their valence shell except helium which have 2 electrons in its valence shell.
Because all noble gases have completely filled valence orbitals. Helium has 2 valence electrons whereas all other noble gases have 8 valence electrons.
Valence electrons are electrons in the outermost shell (or outermost energy level or outermost orbital) in an atom. Noble gases have 8 valence electrons. But helium (a noble gas) has only 2 valence electrons.
Group 18 contains eight valence electrons, namely the noble gases.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
All the noble gases have 8 electrons in their valence shell except helium which have 2 electrons in its valence shell.
Because all noble gases have completely filled valence orbitals. Helium has 2 valence electrons whereas all other noble gases have 8 valence electrons.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2 valence electrons) and have stable electronic configuration.
8, except for helium which has 2 valence electrons
Helium has only 2 valence electrons. The rest noble gases have eight.
These are the noble gases.
All noble gases have 8 valence electrons. Helium has only 2.
Helium is the noble gas with only 2 valence electrons