noble gas


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noble gas

n.
Any of the elements in Group 18 of the periodic table, including helium, neon, argon, krypton, xenon, and radon, which are monatomic and with limited exceptions chemically inert. Also called rare gas.

noble gas

n
(Chemistry) another name for inert gas1

no′ble gas′


n.
any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon. Also called inert gas.
[1900–05]

no·ble gas

(nō′bəl)
Any of the six gases helium, neon, argon, krypton, xenon, and radon. Because the outermost electron shell of atoms of these gases is full, they do not react chemically with other substances except under certain special conditions. Also called inert gas. See Periodic Table.
Word History What makes a noble gas so noble? The noble gases are a group of six chemical elements, normally occurring in gaseous form, that do not react chemically with other elements or chemical compounds except very rarely. Helium and neon are two familiar examples. The fact that the noble gases do not mix with other elements became the basis for a comparison with nobility. The nobility—the class that rules many societies and includes royalty—usually keep to themselves and do not mix with common folk.

noble gas

Any of a series of elements that are mostly inert and monatomic, for example argon and helium.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.noble gas - any of the chemically inert gaseous elements of the helium group in the periodic tablenoble gas - any of the chemically inert gaseous elements of the helium group in the periodic table
chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Ar, argon, atomic number 18 - a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
atomic number 2, He, helium - a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
atomic number 36, Kr, krypton - a colorless element that is one of the six inert gasses; occurs in trace amounts in air
atomic number 10, Ne, neon - a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts
atomic number 86, radon, Rn - a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
atomic number 54, Xe, xenon - a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts
gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
Translations
vzácný plyn
nobla gaso
väärisgaas
jalokaasu
gaz noble
plemeniti plin
貴ガス
edelgas
gaz szlachetny
ädelgas
References in periodicals archive ?
Delivery of a specified noble gas mass spectrometer specified for the measurement of Argon in the context of a sales contract.
Contrary to the 2006 announced DPRK nuclear test, none of the CTBTO's noble gas [detection] stations have detected xenon isotopes in a characteristic way that could be attributed to the [2009] DPRK event so far, even though the system is working well and the network's density in the region is considerably higher than in 2006.
Even as Caldicott discusses the medical effects of radioactive noble gas emissions, she misstates that these isotopes are gamma emitters instead of the less hazardous beta emissions.
The purchase adds noble gas IRMS capabilities to Thermo's IRMS product line.
However, this can be alleviated when a conductive noble gas or other energy source is grounded and used to supplement the difference in the conformal space required between the material and the cylindrical mandrel.
The explanation is that removal of the optical electron from a noble gas atom yields an ion whose ground configuration does not consist of a single level, but rather a doublet [.
A noble gas, it was discovered by Scottish scientist Sir William Ramsay 100 years ago today.
Helium, the lightest and most familiar noble gas, occurs as a fractional component of natural gas.
Compounds such as xenon fluoroplatinate are therefore now referred to as noble gas compounds.
Following the recent increase in the analytical capacity of the IAEAs noble gas facility, this CRP will provide the possibility to improve Member States capabilities in the assessment of deep groundwater systems by offering the combined use of the paleo-temperature estimates from isotopes of neon, argon, krypton and xenon and the age dating by helium-4 cross calibrated with other isotope techniques.
Using the spacecraft's measurements, Bruce Jakosky (University of Colorado, Boulder) and colleagues determined the abundances of the noble gas argon-36 and of the heavier isotope argon-38.
Their topics include the early days of metallofullerene research, the crystallographic study of the endohedral metallofullerenes, new developments and challenges in metal nitride clusterfullerenes, metal carbide clusterfullerenes, nitrogen atom-based endohedral fullerenes and potential applications, noble gas fullerenes, electrochemical properties of endohedral metallofullerenes, biomedical applications of trimetallic nitride endohedral metallofullerenes, and a higher LUMO (lowest unoccupied molecular orbital) level endohedral fullerene and fullerene bisadduct acceptors for polymer solar cells.