Antimony vs Gadolinium

PropertySb AntimonyGd Gadolinium
Atomic number5164
SymbolSbGd
NameAntimonyGadolinium
Categorymetalloidlanthanide
Standard Atomic Weight121.76 u157.25 u
Period56
Group15N/A
Blockps
Phase at STPsolidsolid
Electron configuration[Kr]5s24d105p3[Xe]6s24f75d1
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][0, 1, 2, 3]
Electronegativity (Pauling)2.051.2
Electron affinity1.07 eV0.132 eV
Density6685 kg/m³7900 kg/m³
Melting point630.63 °C1312.85 °C
Boiling point1586.85 °C3272.85 °C
Discovery year17071886