Best answer
They have very low reactivity
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What are noble gases?
Noble gases have had their own special name since as early as 1898. The noble gases make up the last column of elements in the periodic table. They are commonly called Group 18, the inert gases, the rare gases, the helium family, or the neon family.
Which group on the periodic table are called noble gases Quizlet?
Accordingly, which group on the periodic table are called noble gases? The noble gases make up the last column of elements in the periodic table. They are commonly called Group 18, the inert gases, the rare gases, the helium family, or the neon family. The group consists of 7 elements: helium, neon, argon, krypton, xenon, and radon.
Why don’t noble gases form many compounds?
With a great enough energy supply, the outer electrons of a noble gas can be ionized, and once the gas is ionized, it can accept electrons from other elements. Even under these conditions, noble gases do not form many compounds. Only a few hundred are known to exist. Examples include xenon hexafluoride (XeF 6) and argon fluorohydride (HArF).
Why do noble gases have low melting and boiling points?
The molecules of noble gases are composed of single atoms, and their melting points and boiling points are very low. As the atomic weight increases, the melting and boiling points increase.