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Q: What is special about the outer electron orbits of helium neon and argon?
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What element that has full electron shells?

The noble gases, which are helium, neon, argon, krypton, xenon, and radon, have their outermost electron shells full.


Most abundant noble gas in atmosphere?

hydrogen or heliumhydrogen or helium


Why does helium has a higher first ionization energy than argon?

The ionisation energy depends on the orbital from which the electron is removed and also the distance of the orbital from the nucleus. In the case of Helium, the electron is removed from 1s orbital whereas in the case of argon it is from 3p orbital. As 1s is closer to the nucleus, the force of attraction experience by these electrons is higher and hence helium will have higher 1st ionisation energy.


What does Helium Neon Argon has in common?

They're nobile gases, meaning they have their outer valence electron shells filled and so practically no reactivity with other atoms. Helium has 2 electrons filling its valence shell whereas neon and argon have 8.


To which family do argon and helium belong?

Argon and Helium are part of the noble gasses family.


Is helium more reactive than argon?

No. Both helium and argon are chemically inert.


Argon Helium and Neon are examples of?

noble gases


Which atom is larger out of helium and argon?

argon


What do argon and helium form?

They form a mixture of argon and helium. Both argon and helium are noble gasses, meaning that the do not usually react and certainly will not react with one another.


How many orbits are there in argon?

Argon belongs to period 3. So it has 3 orbits with 2, 8 and 8 electrons.


What does helium and argon make when mixed?

It makes a helium-argon mixture - nothing more, nothing less.


Do all of the noble gases have at least 3 electron shielding layers?

No, not all noble gases have at least 3 electron shielding layers. The noble gas helium (He) has only two electron shielding layers, while the remaining noble gases (Neon, Argon, Krypton, Xenon, and Radon) have three or more electron shielding layers.