Science Periodic Table - Elements - Gadolinium Symbol Gd Atomic Number 64 Relative Atomic Mass 12C = 12.0000 157.25 Atomic Radius pm 180 First Ionisation Energy kJ mol-1 592.5 Electronegativity 1.20 Density kg m-3 7900.4 [298 K] Molar Volume cm3 19.90 Thermal Conductivity W m-1 K-1 10.6 [300 K] Melting Point K 1586 Boiling Point K 3539 Number of Isotopes 23 Ground State Electron Configuration [Xe]4f75d16s2 Term Symbol 9D2 Discovery Discovered by J.C. Galissard de Marignac (Geneva, Switzerland) in 1880 and isolated by P.É. Lecoq de Boisbaudren (Paris, France) in 1886 Name Derived From Named after J. Gadolin Name in Other Languages  Croatian Gadolinij  Danish gadolinium  Dutch gadolinium  Finnish gadolinium  French gadolinium  German Gadolinium  Italian gadolinio  Norwegian gadolinium  Portuguese gadolíneo  Spanish gadolinio  Swedish gadolinium Peter van der Krogt's Element Multidict - element name translations in over 48 langauges

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