((Infobox element
|symbol =Sr
|Z      =38
|number =38
|name   =strontium
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[rubidium]]
|right=[[yttrium]]
|above=[[calcium|Ca]]
|below=[[barium|Ba]]
|image name=Strontium_destilled_crystals.jpg
|appearance=silvery white metallic; with a pale yellow tint<ref>Greenwood and Earnshaw, p. 112</ref>
|electrons per shell=2, 8, 18, 8, 2<ref>((cite web |title=Periodic Table of Elements: Strontium - Sr (EnvironmentalChemistry.com) |url=https://environmentalchemistry.com/yogi/periodic/Sr.html |website=environmentalchemistry.com |access-date=7 December 2022))</ref>
|phase=
|density=2.582&nbsp;g/cm<sup>3</sup><ref name="Arblaster 2018" />
|density conditions=(at&nbsp;20°&nbsp;C)
|density gpcm3nrt=
|density gpcm3mp=2.375
|melting point K=1050
|melting point C=777
|melting point F=1431
|boiling point K=1650
|boiling point C=1377
|boiling point F=2511
|heat fusion=7.43
|heat vaporization=141
|heat capacity=26.4
|vapor pressure 1=796
|vapor pressure 10=882
|vapor pressure 100=990
|vapor pressure 1 k=1139
|vapor pressure 10 k=1345
|vapor pressure 100 k=1646
|vapor pressure comment=
|crystal structure=face-centered cubic
|crystal structure Pearson symbol=cF4
|lattice constant=''a''&nbsp;=&nbsp;608.6&nbsp;pm (at&nbsp;20&nbsp;°C)<ref name="Arblaster 2018">((cite book |last=Arblaster |first= John W. |title=Selected Values of the Crystallographic Properties of Elements |publisher=ASM International |publication-place=Materials Park, Ohio |date=2018 |isbn=978-1-62708-155-9))</ref>
|electronegativity=0.95
|number of ionization energies=3
|ionization energy 1=549.5
|ionization energy 2=1064.2
|ionization energy 3=4138
|atomic radius=215
|covalent radius=195±10
|Van der Waals radius=249
|magnetic ordering=[[paramagnetism|paramagnetic]]
|electrical resistivity unit prefix=n
|electrical resistivity at 20=132
|thermal conductivity=35.4
|thermal expansion at 25=
|thermal expansion=<!-- see thermal expansion comment -->
|thermal expansion comment=((val|22.55|e=−6))/K (at&nbsp;20&nbsp;°C)<ref name="Arblaster 2018" />
|magnetic susceptibility= ((val|−92.0|e=−6))
|magnetic susceptibility ref= &#x20;(298&nbsp;K)<ref>((Cite book|title=CRC, Handbook of Chemistry and Physics|last=Weast|first=Robert|publisher=Chemical Rubber Company Publishing|year=1984|isbn=0-8493-0464-4|location=Boca Raton, Florida|pages=E110))</ref>
|Young's modulus=15.7
|Shear modulus=6.03
|Poisson ratio=0.28
|Mohs hardness=1.5
|CAS number=7440-24-6
|naming=after the mineral [[strontianite]], itself named after [[Strontian]], Scotland
|discovered by=[[William Cruickshank (chemist)|William Cruickshank]]
|discovery date=1787
|first isolation by=[[Humphry Davy]]
|first isolation date=1808
|QID=Q938
))<!--

--><noinclude>
((Infobox element/element navigation|symbol=Sr))
((Template reference list))
((documentation|1=Template:Infobox element/doc))
</noinclude>