క్రిప్టాన్, 00 Kr A krypton-filled
discharge tube glowing white
Pronunciation (KRIP -ton ) Appearance colorless gas, exhibiting a whitish glow in a high electric field
Group మూస:Infobox element/symbol-to-group/format Period period 4 Block p-block Electron configuration [Ar ] 3d10 4s2 4p6 Electrons per shell 2, 8, 18, 8 Phase at STP gas Melting point 115.78 K (-157.37 °C, -251.27 °F) Boiling point 119.93 K (-153.415 °C, -244.147 °F) Density (at STP) 3.749 g/L when liquid (at b.p. ) 2.413[ 3] g/cm3 Triple point 115.775 K, 73.53[ 4] kPa [ 5] Critical point 209.48 K, 5.525[ 4] MPa Heat of fusion 1.64 kJ/mol Heat of vaporization 9.08 kJ/mol Molar heat capacity 5R /2 = 20.786 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
Oxidation state s0 , +1, +2 (rarely more than 0; oxide is unknown)Electronegativity Pauling scale: 3.00 Covalent radius 116±4 pm Van der Waals radius 202 pm Spectral line s of క్రిప్టాన్Natural occurrence primordial Crystal structure face-centered cubic (fcc) Speed of sound (gas, 23 °C) 220, (liquid) 1120 m/s Thermal conductivity 9.43×10-3 W/(m⋅K) Magnetic ordering diamagnetic [ 6] CAS Number 7439-90-9 Discovery William Ramsay and Morris Travers (1898) First isolation William Ramsay and Morris Travers (1898) Template:infobox క్రిప్టాన్ isotopes does not exist Category: క్రిప్టాన్ | references
References
These references will appear in the article, but this list appears only on this page.
↑ "Standard Atomic Weights: Krypton" . CIAAW . 2001.
↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)" . Pure and Applied Chemistry (in ఇంగ్లీష్). doi :10.1515/pac-2019-0603 . ISSN 1365-3075 .
↑ Krypton . encyclopedia.airliquide.com
↑ 4.0 4.1 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press . p. 4.121. ISBN 1439855110 .
↑ "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.
↑ 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 .