Science Periodic Table - Elements - Strontium Symbol Sr Atomic Number 38 Relative Atomic Mass 12C = 12.0000 87.62 Atomic Radius pm 215 First Ionisation Energy kJ mol-1 549.5 Electronegativity 0.95 Density kg m-3 2540 [293 K] 2375 [l., m.p.] Molar Volume cm3 34.50 Thermal Conductivity W m-1 K-1 35.3 [300 K] Melting Point K 1042 Boiling Point K 1657 Number of Isotopes 23 Ground State Electron Configuration [Kr]5s2 Term Symbol 1S0 Discovery Discovered by A. Crawford (Edinburgh, Scotland) in 1790 and isolated by Sir H. Davey (London, England) in 1808 Name Derived From Named after Strontian, Scotland Name in Other Languages  Croatian Stroncij  Danish strontium  Dutch strontium  Finnish strontium  French strontium  German Strontium  Italian stronzio  Norwegian strontium  Portuguese estrôncio  Spanish estroncio  Swedish strontium Peter van der Krogt's Element Multidict - element name translations in over 48 langauges

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