Chemistry at the Edge of the Periodic Table: The Importance of Periodic Trends on the Discovery of the Noble Gases and the Development of Noble-Gas Chemistry

2019 ◽  
Author(s):  
Gary J. Schrobilgen
Keyword(s):  
Periodic Table ◽  
Noble Gases ◽  
Noble Gas ◽  
Gas Chemistry

Oganesson, Where Art Thou?

2018 ◽  
Vol 40 (4) ◽  
pp. 27-27
Author(s):  
Daniel Rabinovich
Keyword(s):  
Experimental Data ◽  
Periodic Table ◽  
Noble Gas ◽  
Press Release ◽  
International Union ◽  
Applied Chemistry

Abstract In a press release dated 30 December 2015, the International Union of Pure and Applied Chemistry (IUPAC) announced that a thorough review by independent experts of the experimental data available for the syntheses of elements 113, 115, 117, and 118 has been concluded, and that the discovery of the four elements completing the 7th row of the periodic table was confirmed. The elemental names and symbols proposed shortly thereafter by the corresponding discovery teams met the criteria prescribed by IUPAC for naming new elements, and nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og), became permanent within a few months. As such, the ending of the name of element 118 and its location in the periodic table, below radon in group 18, are consistent with the assumption that oganesson could be regarded as a noble gas.

Noble-Gas Chemistry

2019 ◽  
pp. 419-446
Author(s):  
Wojciech Grochala ◽  
Leonid Khriachtchev ◽  
Markku Rasanen
Keyword(s):  
Noble Gas ◽  
Gas Chemistry

Liquid noble gases for dark matter searches: An updated survey

2015 ◽  
Vol 30 (26) ◽  
pp. 1530053 ◽  
Author(s):  
R. Bernabei ◽  
P. Belli ◽  
A. Incicchitti ◽  
F. Cappella ◽  
R. Cerulli
Keyword(s):  
Dark Matter ◽  
Noble Gases ◽  
Noble Gas ◽  
Low Energy ◽  
Gas Detectors ◽  
Double Phase ◽  
Methodological Comparison ◽  
Direct Dark Matter ◽  
Energy Physics

An updated technical and methodological comparison of liquid noble gas experiments is presented with particular attention to the low energy physics application of double-phase noble gas detectors in direct Dark Matter investigations.

scholarly journals Emission of Noble Gases Binary Mixtures under Excitation by the Products of the 6Li (n, α)3 H Nuclear Reaction

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Kuanysh Samarkhanov ◽  
Mendykhan Khasenov ◽  
Erlan Batyrbekov ◽  
Inesh Kenzhina ◽  
Yerzhan Sapatayev ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Nuclear Energy ◽  
Alkali Metals ◽  
Nuclear Reactor ◽  
Noble Gases ◽  
Noble Gas ◽  
Direct Conversion ◽  
Reaction Products ◽  
Gas Molecules ◽  
Sodium And Potassium

The luminescence of Kr-Xe, Ar-Kr, and Ar-Xe mixtures was studied in the spectral range 300–970 nm when excited by 6Li (n, α)3 H nuclear reaction products in the core of a nuclear reactor. Lithium was deposited on walls of experimental cell in the form of a capillary-porous structure, which made it possible to measure up to a temperature of 730 K. The temperature dependence of the radiation intensity of noble gas atoms, alkali metals, and heteronuclear ionic noble gas molecules was studied. Also, as in the case of single-component gases, the appearance of lithium lines and impurities of sodium and potassium is associated with vaporization during the release of nuclear reaction products from the lithium layer. The excitation of lithium atoms occurs mainly as a result of the Penning process of lithium atoms on noble gas atoms in the 1s states and subsequent ion-molecular reactions. Simultaneous radiation at transitions of atoms of noble gases and lithium, heteronuclear ion molecules of noble gases allows us to increase the efficiency of direct conversion of nuclear energy into light.

scholarly journals Leading Interaction Components in the Structure and Reactivity of Noble Gases Compounds

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2367
Author(s):  
Francesca Nunzi ◽  
Giacomo Pannacci ◽  
Francesco Tarantelli ◽  
Leonardo Belpassi ◽  
David Cappelletti ◽  
...  
Keyword(s):  
Chemical Bond ◽  
Theoretical Approach ◽  
Noble Gases ◽  
Halogen Bond ◽  
Noble Gas ◽  
Anomalous Behavior ◽  
Type Interaction ◽  
Long Life ◽  
Weak Chemical

The nature, strength, range and role of the bonds in adducts of noble gas atoms with both neutral and ionic partners have been investigated by exploiting a fine-tuned integrated phenomenological–theoretical approach. The identification of the leading interaction components in the noble gases adducts and their modeling allows the encompassing of the transitions from pure noncovalent to covalent bound aggregates and to rationalize the anomalous behavior (deviations from noncovalent type interaction) pointed out in peculiar cases. Selected adducts affected by a weak chemical bond, as those promoting the formation of the intermolecular halogen bond, are also properly rationalized. The behavior of noble gas atoms excited in their long-life metastable states, showing a strongly enhanced reactivity, has been also enclosed in the present investigation.

scholarly journals Noble Gases in Terrestrial Planets: Evidence for Cometary Impacts?

1989 ◽  
Vol 116 (1) ◽  
pp. 429-437
Author(s):  
Tobias Owen ◽  
Akiva Bar-Nun ◽  
Idit Kleinfeld
Keyword(s):  
Low Temperatures ◽  
Noble Gases ◽  
Noble Gas ◽  
Terrestrial Planets ◽  
Laboratory Studies ◽  
The Impact ◽  
Gas Patterns ◽  
Atmosphere Of Venus

AbstractThe possible role of comets in bringing volatiles to the inner planets is investigated by means of laboratory studies of the ability of ice to trap gases at low temperatures. The pattern of the heavy noble gases formed in the atmosphere of Venus can be explained by the impact of a planetesimal composed of ices formed in the range of 20 to 30 K. The noble gas patterns on Mars and Earth are less explicable by cometary bombardment alone.

scholarly journals Noble-gas-infused neoprene closed-cell foams achieving ultra-low thermal conductivity fabrics

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21389-21398 ◽  
Author(s):  
Jeffrey L. Moran ◽  
Anton L. Cottrill ◽  
Jesse D. Benck ◽  
Pingwei Liu ◽  
Zhe Yuan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Noble Gases ◽  
Noble Gas ◽  
Low Thermal Conductivity ◽  
Closed Cell

Herein, we develop, demonstrate, and model a repeatable process for synthesizing ultra-low-thermal-conductivity closed-cell neoprene garments by infusing high-molecular-weight noble gases.

scholarly journals Identification of chondritic krypton and xenon in Yellowstone gases and the timing of terrestrial volatile accretion

2020 ◽  
Vol 117 (25) ◽  
pp. 13997-14004 ◽  
Author(s):  
Michael W. Broadley ◽  
Peter H. Barry ◽  
David V. Bekaert ◽  
David J. Byrne ◽  
Antonio Caracausi ◽  
...  
Keyword(s):  
Mantle Plume ◽  
Noble Gases ◽  
Noble Gas ◽  
Mid Ocean Ridge ◽  
Mantle Sources ◽  
Source Mantle ◽  
Morb Source ◽  
Protosolar Nebula ◽  
Ocean Ridge ◽  
Yellowstone Caldera

Identifying the origin of noble gases in Earth’s mantle can provide crucial constraints on the source and timing of volatile (C, N, H2O, noble gases, etc.) delivery to Earth. It remains unclear whether the early Earth was able to directly capture and retain volatiles throughout accretion or whether it accreted anhydrously and subsequently acquired volatiles through later additions of chondritic material. Here, we report high-precision noble gas isotopic data from volcanic gases emanating from, in and around, the Yellowstone caldera (Wyoming, United States). We show that the He and Ne isotopic and elemental signatures of the Yellowstone gas requires an input from an undegassed mantle plume. Coupled with the distinct ratio of129Xe to primordial Xe isotopes in Yellowstone compared with mid-ocean ridge basalt (MORB) samples, this confirms that the deep plume and shallow MORB mantles have remained distinct from one another for the majority of Earth’s history. Krypton and xenon isotopes in the Yellowstone mantle plume are found to be chondritic in origin, similar to the MORB source mantle. This is in contrast with the origin of neon in the mantle, which exhibits an isotopic dichotomy between solar plume and chondritic MORB mantle sources. The co-occurrence of solar and chondritic noble gases in the deep mantle is thought to reflect the heterogeneous nature of Earth’s volatile accretion during the lifetime of the protosolar nebula. It notably implies that the Earth was able to retain its chondritic volatiles since its earliest stages of accretion, and not only through late additions.

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