The noble gases have outer electron shells that are completely full. Therefore, they do
do not form ordinary compounds and a different method has to be used to define their electronegativity.
Electronegativity for noble gases have been determined using the Allred-Rochow scales. Their values are :
He=5.50, Ne=4.84, Ar=3.20, Kr=2.94, Xe=2.40.
The Mulliken-Jaffe scale lists their electronegativities as:
He=3.49, Ne=3.98, Ar=3.19, Kr=3.00, Xe=2.73, Rn=2.59 (F=3.91, H=2.25).
The Allen electronegativity scale (Spectroscopic electronegativity scale) lists the EN of noble gases as
He=4.16, Ne=4.79, Ar=3.24, Kr=2.97, Xe=2.58 (F: 4.19, H: 2.30).
The modern high level ab initio calculations indicate that neon is surprisingly less reactive than helium. The reactivity order is Ne < He < Ar < Kr < Xe < Rn
I think it would be easier to say what gases ARE noble gases. The six noble gases are Helium, Neon, Argon, Krypton, Xenon, and Radon. Any other elements are not Noble gases. This can include elements like Gold, Mercury, Calcium, Potassium, and barium.
You think probable to noble gases.
You think probable to electronegativity.
The noble gases do not interact or react to the other elements because they have electron balanced shells. They do not need one or have one to give. Because of this they don't inteact with the other elements unless forced. Not unlike the humans that think they are "noble". Hence the name Noble gases.
'Royal gas' is not a term used in chemistry. Perhaps you mean "noble gas", if so yes "inert gas" and "noble gas" often mean the same thing. However, oxides and fluorides of some of the "noble gasses " do exist, it might be best to think of them as "noble" rather than "inert". Xe, forms oxides.
I think it would be easier to say what gases ARE noble gases. The six noble gases are Helium, Neon, Argon, Krypton, Xenon, and Radon. Any other elements are not Noble gases. This can include elements like Gold, Mercury, Calcium, Potassium, and barium.
Noble gases, such as helium, neon, and argon, do not typically form compounds because they have a stable electron configuration with a full outer shell of electrons, making them very unlikely to gain or lose electrons to form bonds with other elements.
You think probable to noble gases.
Noble gases are chemically inert, they do not form compounds. They are found in trace amounts and hence difficult to be identified.
Noble gases exist in nature in very low concentration and are very unreactive. These prevented their discovery earlier.
In 1871 noble gases wee unknown.
I don't think noble gasses have valence electrons. They are noble because all their shells are full which makes them not as reactive.
You think probable to electronegativity.
The noble gases do not interact or react to the other elements because they have electron balanced shells. They do not need one or have one to give. Because of this they don't inteact with the other elements unless forced. Not unlike the humans that think they are "noble". Hence the name Noble gases.
i think they are not lager because all atoms react to be stable (full) so group 1 elements react to be like noble gases thus making them small n again their mass number is less than those of noble gases.
'Royal gas' is not a term used in chemistry. Perhaps you mean "noble gas", if so yes "inert gas" and "noble gas" often mean the same thing. However, oxides and fluorides of some of the "noble gasses " do exist, it might be best to think of them as "noble" rather than "inert". Xe, forms oxides.
Helium is a Noble Gas in Group O.