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The mineralogy of Krypton

About Krypton
Krypton is a noble gas and as such does not form any natural minerals.
General Properties
Symbol:Kr
Atomic Number:36
Standard atomic weight (Ar):83.798(2)
Electron configuration:[Ar] 3d10 4s2 4p6
Photos
<
Vial of glowing ultrapure krypton.
>
Atomic Properties
Atomic Radius:88 pm
Van der Waals Radius:202 pm
1st Ionization energy:1351 kJ/mol
Oxidation States:2
Physical Properties
Standard State:gas
Bonding Type:atomic
Melting Point:116 K
Boiling Point:120 K
Metal/Non-Metal:noble gas
Main isotopes of Krypton
Isotope% in NatureHalf LifeDecay typeDecay product
78Kr0.35%>1.1×1020yβ+β+ ?78Se
79Krsynthetic35.04hε79Br
β+79Br
80Kr2.25%stable
81Krtrace2.29×105yε81Br
82Kr11.6%stable
83Kr11.5%stable
84Kr57.0%stable
85Krsynthetic10.756hβ−85Rb
86Kr17.3%-β-β- ?86Sr
Main ions of Krypton
NameIonExample minerals
krypton(II)Kr2+
Other Information
Year Discovered:1898
Discovered By:
05594290014946688773061.jpg
Sir William Ramsay
06589760014946685067712.jpg
Morris William Travers


William Ramsay and Morris Travers
Year Isolated:1898
Isolated By:William Ramsay and Morris Travers
Named For:From Greek: kryptos - "hidden one", because of its colorless, odorless, tasteless, gaseous properties
CPK color coding:#5CB8D1
External Links:WikipediaWebElementsLos Alamos National LaboratoryTheodore Gray's PeriodicTable.com
Simple Compounds
Fluorideskrypton fluorideKrF2+2
Geochemistry of Krypton
Goldschmidt classification:Atmophile
Elemental Abundance for Krypton
Crust (CRC Handbook)1 x 10-10mass fraction, kg/kg
Sea Water (CRC Handbook)2.1 x 10-10mass per volume fraction, kg/L
Sea Water (Kaye & Laby)2.1 x 10-10mass per volume fraction, kg/L
Atmosphere (NASA)1ppmas Kr
Solar System (Kaye & Laby)4.8 x 10-5atom mole fraction relative to Si=1
Solar System (Ahrens)4.50 x 10-5 (18%)atom mole fraction relative to Si=1 (% uncertainty)
Periodic Table
1H 2He
3Li 4Be 5B 6C 7N 8O 9F 10Ne
11Na 12Mg 13Al 14Si 15P 16S 17Cl 18Ar
19K 20Ca 21Sc 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga 32Ge 33As 34Se 35Br 36Kr
37Rb 38Sr 39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe
55Cs 56Ba 57La 72Hf 73Ta 74W 75Re 76Os 77Ir 78Pt 79Au 80Hg 81Tl 82Pb 83Bi 84Po 85At 86Rn
87Fr 88Ra 89Ac 104Rd 105Db 106Sg 107Bh 108Hs 109Mt 110Ds 111Rg 112Cn 113Nh 114Fl 115Mc 116Lv 117Ts 118Og
 
58Ce 59Pr 60Nd 61Pm 62Sm 63Eu 64Gd 65Tb 66Dy 67Ho 68Er 69Tm 70Yb 71Lu
90Th 91Pa 92U 93Np 94Pu 95Am 96Cm 97Bk 98Cf 99Es 100Fm 101Md 102No 103Lr
Default Categories CPK Electronegativity Atomic Radius Lowest Oxidation Highest Oxidation Crustal Abundance Goldschmidt Mineral Species
Bromine << Krypton >> Rubidium


Spotted a mistake/omission? - These pages are a work in progress, so please send all comments/corrections to jolyon@mindat.org. Thank you.

Constants and physical property data from:

David R. Lide (ed.), CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. Boca Raton, Florida (2005).
Kaye and Laby Tables of Physical & Chemical Constants (2005). Section 3.1.3, Abundances of the elements
A. Earnshaw, N. Greenwood, Chemistry of the Elements, 2nd edition, Butterworth-Heinemann, (1997)
Thomas J. Ahrens (ed.), Global Earth Physics : A Handbook of Physical Constants, American Geophysical Union (1995)
L.B. Railsback, An Earth Scientist's Periodic Table of the Elements and Their Ions : Geology 31:9 p737-740 (2003)
Emsley, J. Nature's Building Blocks: An A-Z Guide to the Elements. New York: Oxford University Press (2001)
 
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