The noble gases are the chemical elements in group 18 of the periodic table.

They are the most stable due to having the maximum number of valence electrons their outer shell can hold.

Therefore, they rarely react with other elements since they are already stable.

Other characteristics of the noble gases are that they all conduct electricity, fluoresce, are odorless and colorless, and are used in many conditions when a stable element is needed to maintain a safe and constant environment.

This chemical series contains helium, neon, argon, krypton, xenon, and radon.

The noble gases were previously referred to as inert gases, but this term is not strictly accurate because several of them do take part in chemical reactions..

For more information about the topic Noble gas, read the full article at Wikipedia.org, or see the following related articles:

Argon — Argon is a chemical element in the periodic table. It has the symbol Ar and atomic number 18. The third noble gas, in group 18, argon makes up about ...  > read more

Actinide — The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. ...  > read more

Neon — Neon is the chemical element in the periodic table that has the symbol Ne and atomic number 10. A colorless, nearly inert noble gas, neon gives a ...  > read more

Lanthanide — The lanthanide series comprises the 15 elements from lanthanum to lutetium on the periodic table, with atomic numbers 57 through 71. All lanthanides ...  > read more

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