Template:Infobox strontium

Strontium, ₃₈Sr
Strontium
Pronunciation	/ˈstrɒnʃiəm, -tiəm/ (STRON-shee-əm, -tee-əm)
Appearance	sillery white metallic; wi a fauch yellae tint
Standard atomic weight Ar, std(Sr)	87.62(1)
Strontium in the periodic cairt
	rubidium ← strontium → yttrium
Atomic nummer (Z)	38
Group	group 2 (alkaline yird metals)
Period	period 5
Block	s-block
Element category	Alkaline yird metal
Electron confeeguration	[Kr] 5s2
Electrons per shell	2, 8, 18, 8, 2
Pheesical properties
Phase at STP	solit
Meltin pynt	1050 K (777 °C, 1431 °F)
Bylin pynt	1650 K (1377 °C, 2511 °F)
Density (near r.t.)	2.64 g/cm3
when liquid (at m.p.)	2.375 g/cm3
Heat o fusion	7.43 kJ/mol
Heat o vapourisation	141 kJ/mol
Molar heat capacity	26.4 J/(mol·K)
Atomic properties
Oxidation states	+1, +2 strangly basic
Electronegativity	Pauling scale: 0.95
Ionisation energies	1st: 549.5 kJ/mol ; 2nd: 1064.2 kJ/mol ; 3rd: 4138 kJ/mol ; ;
Atomic radius	empirical: 215 pm
Covalent radius	195±10 pm
Van der Waals radius	249 pm
	Colour lines in a spectral rangeSpectral lines o strontium
Ither properties
Naitural occurrence	primordial
Creestal structur	face-centred cubic Face-centred cubic creestal structur for strontium
Thermal expansion	22.5 µm/(m·K) (at 25 °C)
Thermal conductivity	35.4 W/(m·K)
Electrical resistivity	132 nΩ·m (at 20 °C)
Magnetic orderin	paramagnetic
Young's modulus	15.7 GPa
Shear modulus	6.03 GPa
Poisson ratio	0.28
Mohs haurdness	1.5
CAS Nummer	7440-24-6
History
Namin	efter the mineral strontianite, itsel named efter Strontian, Scotland
Diskivery	William Cruickshank (1787)
First isolation	Humphry Davy (1808)
Main isotopes o strontium
β+	83Rb
γ	–
γ	–
β−	89Y
	Decay modes in parentheses are predictit, but hisnae yet been observed
	view; talk; edit; \| references

style="text-align:left"\| data m.p. cat v
	in	calc from C	diff	report	ref
C	777	—	—
K	1050	1050	0
F	1431	1431	0
WD
input	C: 777, K: 1050, F: 1431
comment

style="text-align:left"\| data b.p. cat v
	in	calc from C	diff	report	ref
C	1377	—	—
K	1650	1650	0
F	2511	2511	0
WD
input	C: 1377, K: 1650, F: 2511
comment

References

↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth–Heinemann. p. 112. ISBN 0080379419.
↑ Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
↑ Colarusso, P.; Guo, B.; Zhang, K.-Q.; Bernath, P. F. (1996). "High-Resolution Infrared Emission Spectrum of Strontium Monofluoride" (PDF). J. Molecular Spectroscopy. 175 (1): 158. Bibcode:1996JMoSp.175..158C. doi:10.1006/jmsp.1996.0019.

[1] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth–Heinemann. p. 112. ISBN 0080379419.

[CIAAW2013-2] Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[3] Colarusso, P.; Guo, B.; Zhang, K.-Q.; Bernath, P. F. (1996). "High-Resolution Infrared Emission Spectrum of Strontium Monofluoride" (PDF). J. Molecular Spectroscopy. 175 (1): 158. Bibcode:1996JMoSp.175..158C. doi:10.1006/jmsp.1996.0019.

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