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Because it has 2 electrons which fill up its electron shell, making it unreactive and stable.

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What compounds contain helium?

Helium is a noble gas and typically does not form compounds with other elements due to its stable electron configuration. However, in extremely rare cases, helium can form compounds with highly electronegative elements under specific conditions, such as with fluorine to form helium difluoride (HeF2) or with oxygen to form helium oxide (HeO2).


Does helium form compounds?

Answer:Helium is an inert gas and does not easily form any compounds, in fact there are no known compounds. (It's valence shell is full to capacity, 1s2.) In an electrical discharge it can form metastable 'compounds' called excimers (short for excited dimers) with tungsten, iodine, sulfur, fluorine, phosphorus and sulfur. These are short lived entities, lifetime typically measured in nanoseconds, that are formed by excited helium atoms.There is some thought that helium may react like argon and form helium fluorohydride (HHeF) similar to the argon compound HArF.The curious investigator could use the link below to surf to the Wikipedia post on the compounds of helium. It's only two paragraphs long and easy to read. Why not pull out the stops and go for it?


What is a element that will not form a compound?

Group 0 Elements ( Helium, Neon, Argon...) do not form compounds because they have a complete Octet and are thus unreactive and exist as mono atomic elements


Helium and neon cant form compounds with fluorine why?

Helium and neon are noble gases, which have full valence shells of electrons and are highly stable. They do not readily form compounds with other elements, including fluorine, because they have little tendency to gain or lose electrons to form chemical bonds. This makes them unreactive and inert.


What element would be the most different from magnesium?

The element that would be most different from magnesium is helium. Helium is a noble gas located in Group 18 of the periodic table, while magnesium is an alkaline earth metal in Group 2. Helium is a gas at room temperature and does not typically form compounds, whereas magnesium is a solid and readily forms compounds.