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Noble gases are unreactive non-metal gases that often show trends in their physical properties, and their uses depend upon their low density, inertness, and non-inflammability.
Let us get acquainted with everything you need to know about noble gases and the reason behind the query.
Noble gases refer to the chemical elements in periodic table’s group 18.
The noble gases are most stable because of the maximum number of valence electrons in their outermost shell. And that is why they rarely react with other elements as they are already stable.
As compared to the other elements on the periodic table, noble gases are inert and highly unreactive.
The primary properties of the noble gases include
Helium is utilized as a lifting gas in airships and party balloons.
Argon is often utilized as a shielding gas while welding the metal pieces together.
Noble gases are so unreactive because of the number of electrons present in the outermost shell of their atoms. And as their outer shell is full, indicating it is complicated for them to take or give electrons.
As the noble gases enclose an entire valence shell of electrons and due to this configuration, they are
Noble gases’ outer shell of the valence electrons is generally considered full, giving them a slight tendency to participate in chemical reactions.
The boiling and melting points for a noble gas are close together, differing by less than 18 degrees Fahrenheit or 10 degrees Celsius, including the liquids over a smaller temperature range.
The noble gases generally show significantly lower chemical reactivity, and as an outcome, only a few hundred noble gases compounds are formed.
Neutral compounds in which neon and helium are included in the chemical bonding have not been formed. On the contrary, the krypton, argon, and xenon show minor reactivity only.
Therefore, the reactivity follows the order
Ne < He < Ar < Kr < Xe < Rn
Noble gases are considered so unreactive as they have a fully filled outermost orbital configuration, and because of which noble gases are very much stable and have minimum energy.
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