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lithium
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lithium

Chemical element with symbol Li and atomic number 3

Chemical elementchemical elementlithophile elementactive metalQ568

Also known as element 3

Symbol
Atomic number
Mass
Melting point
  • 180.5°C
  • , 453.7 K
  • , 357.3°F
Boiling point
  • 1,317°C
  • , 2,426°F
Density
  • 0.534 g/cm³
Discovered by
Discovered
  • 1817

Overview

All data

277 statements · 52% with external sources · numbers in brackets are citations

Oxidation state
  • 1
  • 0
Subclass of
Electronegativity
  • 1
Location of discovery
Different from
Part of
Medical condition treated
Permanent duplicated item
Standard molar entropy
Unicode character
Electron configuration
  • 1s² 2s¹
  • [He] 2s¹
Molar fusion enthalpy
  • 3 kilojoule per mole
Molar enthalpy of vaporization
  • 136 kilojoule per mole
Thermal conductivity
  • 84.8 watt per metre kelvin state of matter: solid
Named after
Formula
Ionic radius
  • 0.59 ångström charge number: 1 · coordination number: 4
  • 0.76 ångström charge number: 1 · coordination number: 6
  • 0.92 ångström charge number: 1 · coordination number: 8
Has use
Significant drug interaction
Show 52 more+46 more on Wikidata ↗ (all included in downloads)
Made from material
2022 Harmonized System Code
Bulk modulus
  • 13.8B Pa
Shear modulus
  • 4.15B Pa
Poisson's ratio
  • 0.363
Specific heat capacity
  • 3,482 joule per kilogram kelvin
Speed of sound
  • 6,000 m/s
Electrical resistivity
  • 9.28e-8 ohm metre
Standard enthalpy of formation
  • 159.3 kilojoule per mole state of matter: gas
  • 2.38 kilojoule per mole state of matter: liquid
Has characteristic
Linear thermal expansion coefficient
  • 46.56 micrometre per metre kelvin temperature: 20°C
Ionization energy
IPA transcription
Crystal system
Atomic radius
  • 145 picometre
Covalent radius
  • 128 picometre
Van der Waals radius
  • 181 picometre

On other databases

91 identifiers linking lithium across the web's reference databases