Their outer energy levels are completely filled.
Their outer energy levels are completely filled.
All the elemental gases except for the noble gases come in molecules that are unstable. The noble gases are all stable, they have the maximum number of valence electrons that their outer shell can hold.
Noble gases are the group of elements that are very stable and nonreactive due to their full outer electron shells, which gives them little tendency to gain, lose, or share electrons to form chemical bonds.
Air is a mixture of different gases including nitrogen, oxygen, carbon dioxide, and others. Each of these gases is made up of individual molecules. So, air is not a single molecule or compound, but a combination of multiple molecules of different gases.
Noble gases have completely filled orbitals. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. Hence they are chemically inert and generally donot form compounds / ions under normal conditions.
metaloids, halogens, metals, noble gases, carbon family and i think nitrogen family... there are more but these are the first that come to mind
easily liquifiable gases like Cl2, NH3,SO2,HCl are readily adsorbed because the critical temp of these gases are more. so it is easily liquified and adsorbed more readily.[critical temp is the minimum temp above which a gas cannot be liquified]easily liq. gases possess greater vanderwaals forces ,so they are adsorbed readily.these are the 2 reasons why these gases are readily adsorbed than permanent gases like H2, O2.N2 . etc
I am not sure entirely what you mean but there are lots of elements that go around in pairs, e.g hydrogen, oxygen, nitrogen amongst others.
the gases come from factories
they come from earths atmosphere and gases
a noble gas has a full outer shell; in the case of helium the 1s shell is full making it stable and dose not want anymore electrons making it have a low reativity just like the rest of the noble gases
Noble gases don't react with other elements because of the stability of the outer hell. Helium has 2 electrons , 1s2 a full shell. the restt have an outer shell of 8 electrons the "octet". This gives neon a full valence shell, the rest of the heavier noble gases have an outer shell with 8 electrons which while it is is very stable and makes these gases very un-reactive it is not full.Compounds have been made for the noble gases heavier than neon. These compounds are all unstable and highly reactive and the first a xenon fluoride was made in 1962.