noble gas

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noble gas

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.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

noble gas

(Chemistry) another name for inert gas¹

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

no′ble gas′

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.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

noble gas

Any of a series of elements that are mostly inert and monatomic, for example argon and helium.

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Noun

noble gas - any of the chemically inert gaseous elements of the helium group in the periodic table

argonon, inert gas

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

Edelgas

nobla gaso

väärisgaas

jalokaasu

gaz noble

plemeniti plin

貴ガス

edelgas

gaz szlachetny

благородный газ инертный газ

ädelgas

References in periodicals archive ?

The detection of radioactive noble gas, in particular xenon, could serve to corroborate the seismic findings.

The North Korean nuclear tests

A set of potential parameters was determined when the second virial coefficient and viscosity data are fitted simultaneously within their experimental errors, separately for each noble gas; parameters obtained in this manner were used in all subsequent calculations of properties such as thermal conductivity and diffusion coefficient, in which data were not supplied to parameter estimations, and in mixture property computations.

Modified Lennard-Jones potentials with a reduced temperature-correction parameter for calculating thermodynamic and transport properties: noble gases and their mixtures (He, Ne, Ar, Kr, and Xe)

During its campaign, LACE also detected the noble gas argon on the lunar surface.

Helium gas detected in moon's atmosphere

The idea came while he was scuba diving off the coast of Brazil and learned that the noble gas argon is used as an insulator for deep-sea diving.

Nate Alder: Klymbing to the top

Which of the following elements is NOT a noble gas?

It's your choice

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.

Safe nuclear power?

The purchase adds noble gas IRMS capabilities to Thermo's IRMS product line.

Thermo consolidates position in isotope ratio MS market

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.

Characterization and integrity testing utilizing corona beam technology

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 [.sup.2][P.sub.3/2.sup.o], [.sup.2][P.sub.1/2.sup.o].

On the absorption spectrum of noble gases at the arc spectrum limit

A noble gas, it was discovered by Scottish scientist Sir William Ramsay 100 years ago today.

S0UEAK LEAK; World running out of helium

Helium, the lightest and most familiar noble gas, occurs as a fractional component of natural gas.