Their valency is zero.That is why they are noble.
The noble gases.
The noble gases have the least valency which is zero. It is because thay have a complete shells.
noble gases are inert therefore they posses zero valency
Inert gases
No,they are not active.They are inert gases.
Noble gases are colorless, odorless, and tasteless gases that are nonreactive due to their stable electron configuration. They are located in group 18 of the periodic table and have complete outer electron shells. These gases have low melting and boiling points, making them useful in applications where inert atmospheres are needed.
Except Nobel gases all other gases are molecular. The Nobel Gases, Family or Group 18 are atomic.
Noble gases were considered elements with zero valency; but today a significant number of noble gases (especially xenon) are known.
Nobel gases are also called inert gases because of their reluctance to combine with other substances.
Nobel gases are very unreactive.
Non-metals, they are all gases.
noble gases are already stable.