Fluor

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Fluorine
9F
-

F

Cl
oxygenfluorineneon
Appearance
gas: very pale yellow
liquid: bright yellow
solid: transparent (beta), opaque (alpha)
Small sample of pale yellow liquid fluorine condensed in liquid nitrogen
Liquid fluorine at cryogenic temperatures
General properties
Name, simbolo, kaiphan fluorine, F, 9
Pronunciation Plantilya:IPAc-en, Plantilya:IPAc-en, Plantilya:IPAc-en
Element category halogen
Group, period, block 172, p
Standard atomic weight 18.9984032(5)[1]
Electron configuration [He] 2s2 2p5Plantilya:Sfn
2, 7
Electron shells of fluorine (2, 7)
History
Discovery André-Marie Ampère (1810)
First isolation Henri MoissanPlantilya:Sfn (June 26, 1886)
Named by Humphry Davy
Physical properties
Phase gas
Density (0 °C, 101.325 kPa)
1.696Plantilya:Sfn g/L
Liquid density at b.p. 1.505[2] g·cm−3
Melting point 53.53 K, −219.62 °C, −363.32Plantilya:Sfn °F
Boiling point 85.03 K, −188.12 °C, −306.62Plantilya:Sfn °F
Critical point 144.4 K, 5.215[2] MPa
Heat of vaporization 6.51Plantilya:Sfn kJ·mol−1
Molar heat capacity (Cp) (21.1 °C) 825[2] J·mol−1·K−1
(Cv) (21.1 °C) 610[2] J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 38 44 50 58 69 85
Atomic properties
Oxidation states −1
(oxidizes oxygen)
Electronegativity 3.98Plantilya:Sfn (Pauling scale)
Ionization energies
(more)
1st: 1,681Plantilya:Sfn kJ·mol−1
2nd: 3,374Plantilya:Sfn kJ·mol−1
3rd: 6,147Plantilya:Sfn kJ·mol−1
Covalent radius 64Plantilya:Sfn pm
Van der Waals radius 135[3] pm
Miscellanea
Crystal structure cubic
Fluorine has a cubic crystal structure

the structure refers to solid fluorine, just below the melting point, 1 atm[4]
Magnetic ordering diamagneticPlantilya:Sfn
Thermal conductivity 0.02591Plantilya:Sfn W·m−1·K−1
CAS registry number 7782-41-4Plantilya:Sfn
Most stable isotopes
Main article: Isotopes of fluorine
iso NA half-life DM DE (MeV) DP
18F trace 109.77 min β+ (96.9%) 0.634 18O
ε (3.1%) 1.656 18O
19F 100% 19F is stable with 10 neutrons
reference[5]
t  h  u
· r

Ang fluor (Iningles fluorine) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga F ug kaiphan nga atomik 9. Ang fluor mao ang halogen.

Ang mga gi basihan niini[usba | edit source]

  1. Wieser, Michael E.; Coplen, Tyler B. (2010). "Atomic weights of the elements 2009 (IUPAC Technical Report)". Pure and Applied Chemistry 83: 359–396. doi:10.1351/PAC-REP-10-09-14. 
  2. 2.0 2.1 2.2 2.3 Compressed Gas Association (1999). Handbook of compressed gases, Springer. p. 365. ISBN 9780412782305. 
  3. Kim, Sung-Hoon (2006). Functional dyes, Elsevier. p. 257. ISBN 9780444521767. 
  4. Plantilya:Cite report
  5. Chiste, V.; Be, M. M. (2006). F-18. Table de radionucleides. Laboratoire National Henri Becquerel. Retrieved on 15 June 2011.


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