Melting Point of Inert Gas Crystals: Neon, Argon, Krypton & Xenon

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Discussion Overview

The discussion focuses on the physical properties of inert gas crystals, specifically Neon, Argon, Krypton, and Xenon, including their melting points and other characteristics such as color and transparency. Participants explore theoretical aspects related to these gases in solid form and their behavior at absolute zero.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant seeks detailed physical properties of inert gas crystals, particularly their melting points and other characteristics like color and lustre.
  • Another participant provides melting points for Neon, Argon, Krypton, and Xenon, referencing various sources and noting that these gases are colorless as gases and likely remain so in solid form.
  • A participant mentions a project involving the Bulk Modulus and Energy variation of inert gas crystals using the Lennard-Jones Potential, expressing a need for specific properties at 0 Kelvin to avoid thermal vibrations.
  • Suggestions are made to consult the CRC Handbook for additional data on solid noble gases and their properties at 0 K.
  • There is speculation about the transparency of solid noble gases due to their filled electron shells.

Areas of Agreement / Disagreement

Participants express various needs for data and properties, but there is no consensus on the availability of specific values at 0 K or the transparency of solid noble gases. The discussion remains unresolved regarding the exact properties sought.

Contextual Notes

Participants note the challenge of finding data at 0 K, indicating that such information may be esoteric and not readily available in standard references.

hershal
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I am in search of physical properties of inert gas crystals ( such as colour,lustre,etc). I could get only the melting point.

Specifically, i want for Neon, Argon, Krypton and Xenon which are fcc.
 
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I looked at various sources and could find the following which were most comprehensive.

Neon has a freezing point of about -249°C, and a boiling point of about -246°C
http://www.Newton.dep.anl.gov/askasci/chem99/chem99460.htm
Richard E. Barrans Jr.
CHM/200/M019
Argonne National Laboratory

fcc in solid form
http://environmentalchemistry.com/yogi/periodic/Ne.html#Physical
Melting Pt: 24.703K -248.447°C -415.205°F

http://environmentalchemistry.com/yogi/periodic/Ar.html#Physical
Melting Pt: 83.96K -189.19°C -308.54°F

http://environmentalchemistry.com/yogi/periodic/Kr.html#Physical
Melting Pt: 115.93K -157.22°C -251°F

http://environmentalchemistry.com/yogi/periodic/Xe.html#Physical
Melting Pt: 161.5K -111.7°C -169.1°F

Since the gases are colorless as gas, unless in an electrical discharge, i.e. ionized, they presumably would be colorless as a solid.

Possibly Praxair or BOC might have the properties if they supply those gases.

I don't know if anyone does solid noble gases.
 
Thanks, Astronuc for those links !

I am doing a project to find out the Bulk Modulus and Energy variation of Inert Gas Crystals using Lennard-Jones Potential . So wanted to quote some simple properties of inert gas crystals in the introduction part.

all at 0 Kelvin . Now i have got the value for cell constant ( length of the crystal cube ) at 0K and 0 pressure and cohsive energy at 0 k and 1 atm, that is what is itching me right now.


In charles kittel he has given the value of cell constant extrapolated at 0K and 0 Presure and in oneother book by stephen eliot has the value at 4 K. I want things at 0 K , so that there are no thermal vibrations and it remains simple.

I need cell constant at 0 K and 1 atm if given in any other solid state book or on net or in any data book.
 
Have you tried looking in the CRC Handbook?

Zz.
 
hershal said:
all at 0 Kelvin . Now i have got the value for cell constant ( length of the crystal cube ) at 0K and 0 pressure and cohsive energy at 0 k and 1 atm, that is what is itching me right now.

In charles kittel he has given the value of cell constant extrapolated at 0K and 0 Presure and in oneother book by stephen eliot has the value at 4 K. I want things at 0 K , so that there are no thermal vibrations and it remains simple.

I need cell constant at 0 K and 1 atm if given in any other solid state book or on net or in any data book.
Data at 0 K might be a challenge. That is pretty esoteric.

I was also thinking that if it is colorless, and the electron shells are filled (noble gas), then the solid should be pretty transparent.

You might find the data in a CRC book - Handbook of Chemistry and Physics - as ZapperZ suggested. If you don't have access to one, I can look, but you should perhaps find it in a library, or Chemistry or Physics department.
 

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