Nitrogen vs Polonium

PropertyN NitrogenPo Polonium
Atomic number784
SymbolNPo
NameNitrogenPolonium
Categorynonmetalmetalloid
Standard Atomic Weight14.006855 u209 u
Period26
Group1516
Blocksp
Phase at STPgassolid
Electron configuration2s2.2p3[Xe]6s24f145d106p4
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][-2, 2, 4, 5, 6]
Electronegativity (Pauling)3.042
Electron affinity-0.07 eV1.9 eV
Density1.2506 kg/m³9320 kg/m³
Melting point-210 °C253.85 °C
Boiling point-195.79 °C961.85 °C
Discovery year17721898