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indium
Image: Wikimedia Commons

indium

Chemical element with symbol In and atomic number 49

Chemical elementchemical elementchalcophile elementQ1094

Also known as element 49 · Indium element · Indium metal · In · 49In

Symbol
Atomic number
Mass
Melting point
Boiling point
Density
  • 7.31 g/cm³
Discovered by
Discovered

Overview

All data

153 statements · 25% with external sources · numbers in brackets are citations

Subclass of
Named after
NIOSH Pocket Guide ID
  • 0341
Has effect
Vapor pressure
Time-weighted average exposure limit
Formula
Canonical SMILES
Unicode character
Electronegativity
  • 1.78
Different from
Part of
Ionic radius
  • 0.62 ångström charge number: 3 · coordination number: 4
  • 0.8 ångström charge number: 3 · coordination number: 6
Associated hazard
Electron configuration
  • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p¹
  • [Kr] 5s² 4d¹⁰ 5p¹
Space group
Crystal system
Bulk modulus
  • 35.2B Pa
Shear modulus
  • 11.6B Pa
Poisson's ratio
  • 0.352
Thermal conductivity
  • 81.6 watt per metre kelvin
Electrical conductivity
  • 12.5M siemens per metre
Specific heat capacity
  • 233 joule per kilogram kelvin
Speed of sound
  • 1,215 m/s
Electrical resistivity
  • 8.37e-8 ohm metre
Point group
Mohs' hardness
  • 1.2
Has characteristic
Ionization energy
IPA transcription
Oxidation state
  • 3
  • -5
  • -2
  • -1
  • 0
  • 1
  • 2
Atomic radius
  • 155 picometre
Covalent radius
  • 142 picometre
Van der Waals radius
  • 193 picometre

On other databases

77 identifiers linking indium across the web's reference databases