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Stable.
The valence shell (outermost energy level) of a noble gas is filled in ... ns2 np6 electron configuration except helium where it is 1s2.
A completley filled out electron level makes the atom stable
Group 18 aka the Noble Gases / Inert Gases.
it has 2 because the first energy level has 1
Yes. it is filled.
Stable.
Helium
group 0 or 18
The valence shell (outermost energy level) of a noble gas is filled in ... ns2 np6 electron configuration except helium where it is 1s2.
it is called complete or completely stable
Neon is a noble gas, therefore it is stable meaning that its outer energy ring is full. It has 8 elections on its outer energy level. Check out the related link for a picture of a model of Neons atom.
Hydrogen and Helium both only need two valence electrons to fill their outer shell.
noble gases helium to be exact
A completley filled out electron level makes the atom stable
When the outermost energy level is filled, the atom is stable. Nature always tries to achieve stability.
Group 18 aka the Noble Gases / Inert Gases.