What three things do the elements krypton, neon, and argon have in common?

Question

These three elements are from the same family on the periodic table in the "noble gases" family. They are in number 18.

Answer 1

from Wiki, which has lots more info):

All of them exhibit an extremely low chemical reactivity; in fact no conventional compounds of helium or neon have yet been prepared. Xenon and krypton are known to show some reactivity in the laboratory. Recently argon compounds have also been successfully characterised.
The noble gases' lack of reactivity can be explained in terms of them having a "complete valence shell". They have little tendency to gain or lose electrons. The noble gases have high ionization energies and negligible electronegativities.
The noble gases have very weak inter-atomic forces of attraction, and consequently very low melting points and boiling points. This is why they are all monatomic gases under normal conditions, even those with larger atomic masses than many normally solid elements.

And, no, they are not man-made.

Answer 2

The three elements have electronic configuration ending in 8, means they are octet are complete. They belong to noble gases. These are assumed to be unreactive so tey are called noble gases.

Answer 3

Well, they are all 'noble gases', meaning they do not react with other atoms or molecules.

They are all in the same vertical column in the periodic table.

They all have a full valence, meaning all the places that can have electrons have one, so there's no need, no 'will' to react with anything.

They all glow when electrified and all are used in various types of tube lighting. I don't know if xenon or radon do that as well, but they are likely too expensive or poisonous or both.

Answer 4

they are noble gases, which means they are inert, non reactive, because the all have their valence electron shell completely filled. they do not react chemically. they do exist in nature though. the man made elements are detached from the chart at the bottom, in column f.

Answer 5

They are inert gases and all have 8 outermost electrons, which is a stable configuration. Thus they don't react chemically.

Answer 6

Hey i know,
1. theyre all extremely stable, meaning they form no comounds.
2. they are all used in lighting purposes. Vegas is full of it.
3. Since theyre inert, inactive, theyre used in places instead of vacuum.

Answer 7

they all have a complete outter shell, they are all gasses, and they are stable

Answer 8

i think they are all man made