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strontium
Image: Wikimedia Commons

strontium

Chemical element with symbol Sr and atomic number 38

Chemical elementchemical elementlithophile elementQ938

Also known as element 38 · Sr · 38Sr

Symbol
Atomic number
Mass
Melting point
  • 1,050 K
Boiling point
  • 1,653 K
Density
  • 2,578.21 kg/m³
Discovered by
Discovered
  • 1787

Overview

All data

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

Named after
MCN code
  • 2805.19.10
Canonical SMILES
Formula
Electronegativity
  • 1
Location of discovery
Unicode character
Part of
Found in taxon
Ionic radius
  • 1.18 ångström charge number: 2 · coordination number: 6
  • 1.26 ångström charge number: 2 · coordination number: 8
  • 1.36 ångström charge number: 2 · coordination number: 10
  • 1.44 ångström charge number: 2 · coordination number: 12
Electron configuration
  • [Kr] 5s²
Oxidation state
  • 2
  • 1
Made from material
Bulk modulus
  • 11.5B Pa
Shear modulus
  • 7.7B Pa
Poisson's ratio
  • 0.227
Thermal conductivity
  • 35 watt per metre kelvin
Electrical conductivity
  • 7,410,000 siemens per metre
Electrical resistivity
  • 1.32e-7 ohm metre
Subclass of
Standard enthalpy of formation
  • 164 kilojoule per mole state of matter: gas
  • 0.91 kilojoule per mole state of matter: liquid
Standard molar entropy
  • 164.64 joule per mole kelvin state of matter: gas
  • 50.9 joule per mole kelvin state of matter: liquid
Mohs' hardness
  • 1.5
Has characteristic
Linear thermal expansion coefficient
  • 22.55 micrometre per metre kelvin temperature: 20°C
Ionization energy
IPA transcription
Crystal system
Atomic radius
  • 200 picometre
Covalent radius
  • 195 picometre

On other databases

81 identifiers linking strontium across the web's reference databases