Boron vs Xenon

PropertyB BoronXe Xenon
Atomic number554
SymbolBXe
NameBoronXenon
Categorymetalloidnoble-gas
Standard Atomic Weight10.8135 u131.293 u
Period25
Group1318
Blockpp
Phase at STPsolidgas
Electron configuration[He]2s22p1[Kr]5s24d105p6
Oxidation states[-5, -1, 0, 1, 2, 3][0, 2, 4, 6, 8]
Electronegativity (Pauling)2.042.6
Electron affinity0.27972 eV-0.8 eV
Density2370 kg/m³5.887 kg/m³
Melting point2074.85 °C-111.79 °C
Boiling point3999.85 °C-108.1 °C
Discovery year18081898