Strontium vs Flerovium

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PropertySr StrontiumFl Flerovium
Atomic number38114
SymbolSrFl
NameStrontiumFlerovium
Categoryalkaline-earth-metalpost-transition-metal
Standard Atomic Weight87.62 u289 u
Period57
Group214
Blocksp
Phase at STPsolidgas
Electron configuration[Kr]5s2[Rn] 7s27p2 5f14 6d10(predicted)
Oxidation states[1, 2][0, 1, 2, 4, 6]
Electronegativity (Pauling)0.95N/A
Electron affinity0.052 eV-0.5 eV
Density2640 kg/m³9928 kg/m³
Melting point776.85 °C-273.15 °C
Boiling point1381.85 °C-63.15 °C
Discovery year17921998