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uranium
Image: Wikimedia Commons

uranium

Radioactive, metallic chemical element with symbol U and atomic number 92

Chemical elementchemical elementradioactive elementlithophile elementQ1098

Also known as element 92 · U

Symbol
Atomic number
  • 92
Mass
Melting point
  • 1,407 K
Boiling point
  • 4,203 K
Density
Discovered by
Discovered
  • 1789
  • , 1789

Overview

All data

192 statements · 26% with external sources · numbers in brackets are citations

Named after
Canonical SMILES
Formula
Part of
Electronegativity
  • 1.38
Has characteristic
Fabrication method
Unicode character
Ionic radius
  • 1.03 ångström charge number: 3 · coordination number: 6
  • 0.89 ångström charge number: 4 · coordination number: 6
  • 1 ångström charge number: 4 · coordination number: 8
  • 1.17 ångström charge number: 4 · coordination number: 12
  • 0.76 ångström charge number: 5 · coordination number: 6
  • 0.45 ångström charge number: 6 · coordination number: 2
  • 0.52 ångström charge number: 6 · coordination number: 4
  • 0.73 ångström charge number: 6 · coordination number: 6
Show 1 more
  • 0.86 ångström charge number: 6 · coordination number: 8
Bulk modulus
  • 148B Pa
Shear modulus
  • 114B Pa
Poisson's ratio
  • 0.194
Thermal conductivity
  • 27.6 watt per metre kelvin
Electrical conductivity
  • 3,240,000 siemens per metre
Specific heat capacity
  • 116 joule per kilogram kelvin
Subclass of
Standard molar entropy
  • 199.79 joule per mole kelvin state of matter: gas
  • 50.2 joule per mole kelvin state of matter: solid
Ionization energy
Electron configuration
IPA transcription
Oxidation state
  • 4
  • 6
  • -1
  • 1
  • 2
  • 3
  • 5
Crystal system
Atomic radius
  • 175 picometre
Covalent radius
  • 196 picometre

On other databases

100 identifiers linking uranium across the web's reference databases