Noble gas

The noble gases are the chemical element

Chemical element

A chemical element, often called simply an element, is a substance [i] that can ...

s in group 18 of the periodic table. This chemical series contains helium

Helium

|- | 3He || 0.000137%* || colspan="4" | He is stable [i] with 1 neutron [i] ...

, neon

Neon

[i] in the periodic table that has the symbol Ne and [[atomic number]...

, argon

Argon

Argon is a chemical element [i] designated by the symbol Ar. ...

, krypton

Krypton

Krypton is a chemical element [i] with the symbol Kr and atomic number [i] 36. ...

, xenon

Xenon

Xenon is a chemical element [i] in the periodic table [i] that has the symbol Xe and atomic number [i] ...

, and radon.

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The noble gases are the chemical element