A Noble Gas does not need to have eight electrons to be classed as such - it simply must have a full outer shell. The first shell can only hold two electrons, which is what helium has, so helium is a Noble Gas. The second and third shells hold eight electrons, which is why other noble gases can be seen as having eight electrons. However no Noble Gases have eight electrons in total - just eight in the outer shell, as the shells fill from the inside out...
Helium is an exception to the rest of the noble gases because it has only two electrons in it's valence shell, unlike the rest which all have 8.
In the first shell - 1s - 2 electrons is also an extremely stable arrangement.
Unlike the other shells there is only room for 2 electrons in the first and smallest electron shell.
it's two two two and two
The noble gases: Helium, neon, etc.
The noble gases are extremely stable and have an octet (eight electrons in their outer shell with the exception of helium that has two). The far right group on the periodic table contains the noble gases such as helium, neon, argon, krypton, etc.
Helium is include in the group 18 along with the noble gases.
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.
Inert gases have 8 valence electrons. This is why they are inert, they have a complete octet formed of electrons and are in their lowest energy configuration.
All noble gases can be ionised- helium is no exception- it is not easy- it can be done in plasmas, glow discharge tubes.
The noble gases: Helium, neon, etc.
The noble gases are extremely stable and have an octet (eight electrons in their outer shell with the exception of helium that has two). The far right group on the periodic table contains the noble gases such as helium, neon, argon, krypton, etc.
Helium is include in the group 18 along with the noble gases.
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.
HELIUM,NEON,ARGON,KRYPTON,XENON and RADON are the noble gases
Inert gases have 8 valence electrons. This is why they are inert, they have a complete octet formed of electrons and are in their lowest energy configuration.
Yes, they are all noble gases.
Helium is a Noble Gas in Group O.
There are no metals in noble gases.All are gases in noble gases.
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Noble Gases