they are stable
It is because they are chemically stable.
Noble gases have completely filled orbitals. They generally have 8 valence electrons (helium has only 2) and obey octet rule (stable electronic configuration). Hence they are chemically inert (or do not react with other elements).
Because the outer electron shells are full.
Helium is nonreactive because of its full outer shell of electrons and forms no compounds.
Their outer energy levels are completely filled with electrons None of the noble gases form compounds easily. No compounds of helium and Neon are known. Compounds of Xe, Kr and Rn and recently even Ar are known however they are difficult to prepare and reactive and some are quite unstable.
Noble gases have completely filled orbitals. They are stable and chemically inert (non-reactive). So generally they will not accept / gain electrons and dont form ionic compounds.
It is because they are chemically stable.
bonding to ionic compounds of the same charge
copper II compounds are more stable because it is hard
Noble gases have completely filled orbitals. They generally have 8 valence electrons (helium has only 2) and obey octet rule (stable electronic configuration). Hence they are chemically inert (or do not react with other elements).
Because the outer electron shells are full.
Helium is nonreactive because of its full outer shell of electrons and forms no compounds.
Nitrogen gas is stable. However there are nitrogen compounds that are reactive.
Pure sodium is very reactive and therefore not chemically stable.
helium has completely filled valence electrons. hence it are stable, chemically inert and do not form compounds.
Their outer energy levels are completely filled with electrons None of the noble gases form compounds easily. No compounds of helium and Neon are known. Compounds of Xe, Kr and Rn and recently even Ar are known however they are difficult to prepare and reactive and some are quite unstable.
because of the valence toms
because of the valence toms