Template:Infobox krypton

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[[Category:Template:Pagetype with short description]]

Krypton, 36Kr
Krypton discharge tube.jpg
A krypton-filled discharge tube glowing white
Krypton
Pronunciation/ˈkrɪptɒn/ (Template:Respell)
Appearancecolorless gas, exhibiting a whitish glow in an electric field
Standard atomic weight Ar, std(Kr)Template:Val[1]
Krypton in the periodic table
Template:Periodic table (32 columns, micro) Ar

Kr

Xe
brominekryptonrubidium
Atomic number (Z)36
Groupgroup 18 (noble gases)
Periodperiod 4
Block  p-block
Electron configuration[Ar] 3d10 4s2 4p6
Electrons per shell2, 8, 18, 8
Physical properties
Phase at STPgas
Melting point115.78 K ​(−157.37 °C, ​−251.27 °F)
Boiling point119.93 K ​(−153.415 °C, ​−244.147 °F)
Density (at STP)3.749 g/L
when liquid (at b.p.)2.413 g/cm3[2]
Triple point115.775 K, ​73.53 kPa[3][4]
Critical point209.48 K, 5.525 MPa[4]
Heat of fusion1.64 kJ/mol
Heat of vaporization9.08 kJ/mol
Molar heat capacity20.95[5] J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 59 65 74 84 99 120
Atomic properties
Oxidation states0, +1, +2 (rarely more than 0; oxide is unknown)
ElectronegativityPauling scale: 3.00
Ionization energies
  • 1st: 1350.8 kJ/mol
  • 2nd: 2350.4 kJ/mol
  • 3rd: 3565 kJ/mol
Covalent radius116±4 pm
Van der Waals radius202 pm
Color lines in a spectral range
Spectral lines of krypton
Other properties
Natural occurrenceprimordial
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for krypton
Speed of sound(gas, 23 °C) 220 m·s−1
(liquid) 1120 m/s
Thermal conductivity9.43×10−3  W/(m·K)
Magnetic orderingdiamagnetic[6]
Magnetic susceptibility−28.8·10−6 cm3/mol (298 K)[7]
CAS Number7439-90-9
History
Discovery and first isolationWilliam Ramsay and Morris Travers (1898)
Main isotopes of krypton
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
78Kr 0.36% 9.2×1021 y[8] εε 78Se
79Kr syn 35 h ε 79Br
β+ 79Br
γ
80Kr 2.29% stable
81Kr trace 2.3×105 y ε 81Br
γ
82Kr 11.59% stable
83Kr 11.50% stable
84Kr 56.99% stable
85Kr syn 11 y β 85Rb
86Kr 17.28% stable
Category Category: Krypton
| references

[[Category:Infobox templates|Template:Remove first word]]

data m.p. cat
in calc from C diff report ref
C −157.37
K 115.78 115.78 0
F −251.27 −251.27 0 Template:Subpage other
max precision 2
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: −157.37, K: 115.78, F: −251.27
comment
data b.p. cat
in calc from C diff report ref
C −153.415
K 119.93 119.735 0.195 delta
F −244.147 −244.147 0 Template:Subpage other
max precision 3
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: −153.415, K: 119.93, F: −244.147
comment
Br ←

i'box Br

iso
36
Kr (E)
→ Rb

i'box Rb

  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03)
See also {{Infobox element/symbol-to--navbox}}

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Krypton. encyclopedia.airliquide.com
  3. "Section 4, Properties of the Elements and Inorganic Compounds; Melting, boiling, triple, and critical temperatures of the elements". CRC Handbook of Chemistry and Physics (85th ed.). Boca Raton, Florida: CRC Press. 2005.
  4. 4.0 4.1 Template:RubberBible92nd
  5. Shuen-Chen Hwang, Robert D. Lein, Daniel A. Morgan (2005). "Noble Gases". Kirk Othmer Encyclopedia of Chemical Technology. Wiley. pp. 343–383. doi:10.1002/0471238961.0701190508230114.a01.
  6. Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
  7. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
  8. Patrignani, C.; et al. (Particle Data Group) (2016). "Review of Particle Physics". Chinese Physics C. 40 (10): 100001. Bibcode:2016ChPhC..40j0001P. doi:10.1088/1674-1137/40/10/100001. See p. 768

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