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fluorine
Image: Wikimedia Commons

fluorine

Chemical element with symbol F and atomic number 9

Chemical elementchemical elementlithophile elementQ650

Also known as element 9 · ₉F

Symbol
Atomic number
  • 9
Mass
Melting point
  • -363°F
Boiling point
  • -307°F
Discovered by
Discovered
  • 1810

Overview

All data

127 statements · 17% with external sources · numbers in brackets are citations

IPA transcription
Oxidation state
  • -1
  • 0
Subclass of
Electronegativity
  • 3.98
NIOSH Pocket Guide ID
  • 0289
Has effect
Immediately dangerous to life or health
  • 38.75 milligram per cubic metre
Vapor pressure
  • 1 standard atmosphere temperature: 68°F · criterion used: minimum
Ionization energy
Time-weighted average exposure limit
  • 0.2 milligram per cubic metre applies to jurisdiction: United States · runtime: 10 h
Location of discovery
Unicode character
Part of
Different from
Electron configuration
  • 1s² 2s² 2p⁵
  • [He] 2s² 2p⁵
Followed by
Named after
Formula
Ionic radius
  • 1.33 ångström coordination number: 6 · charge number: -1
  • 0.08 ångström charge number: 7 · coordination number: 6
Associated hazard
Thermal conductivity
  • 0.0279 watt per metre kelvin
Standard enthalpy of formation
  • 79.38 kilojoule per mole state of matter: gas
Standard molar entropy
  • 158.751 joule per mole kelvin state of matter: gas
Has characteristic
Crystal system
Atomic radius
  • 50 picometre
Covalent radius
  • 57 picometre
Van der Waals radius
  • 147 picometre

On other databases

68 identifiers linking fluorine across the web's reference databases