817 (at melting 3.70 point/boiling 44.15/281c 631/1587 271/1564 −210/−196 MPa)/603 point (°C) (sublimes)† density (g/cm3) (g/L) 1.15 1.82† 5.75‡ 6.68 9.79 at 25°C atomic radius 56 98 114 133 143 (pm) first ionization 1402 1012 945 831 703 energy (kJ/mol) common oxidation to +5 +5, +3, +5, +3 +5, +3 +3 −3 −3 state(s) ionic radius 146 (−3), 212 (−3), 44 76 (+3), 60 58 (+3) 103 (+3) (pm)§ 16 (+3) (+3) (+5) electron affinity 0 −72 −78 −101 −91 (kJ/mol) electronegativity 3.0 2.2 2.2 2.1 1.9 standard reduction potential (E°, V) +0.93 +0.56 +0.65 −0.28 — (EV EIII in → acidic solution)|| product of P4O6, NO2, NO As4O6 Sb2O5 Bi2O3 reaction with O2 P4O10 acidic (NO2), type of oxide acidic acidic amphoteric basic neutral (NO, N2O) product of none none none none — reaction with N2 SbF5, product of BiF5, none PX3, PX5 AsF5, AsX3 SbCl5, reaction with X2 BiX3 SbBr3, SbI3 product of none none none none none reaction with H2
melting point/boiling point (°C) −210/−196 44.15/281c 817 (at 3.70 MPa)/603 (sublimes)† 631/1587 271/1564 density (g/cm3) at 25°C 1.15 (g/L) 1.82† 5.75‡ 6.68 9.79 atomic radius (pm) 56 98 114 133 143 first ionization energy (kJ/mol) 1402 1012 945 831 703 common oxidation state(s) −3 to +5 +5, +3, −3 +5, +3 +5, +3 +3 ionic radius (pm)§ 146 (−3), 16 (+3) 212 (−3), 44 (+3) 58 (+3) 76 (+3), 60 (+5) 103 (+3) electron affinity (kJ/mol) 0 −72 −78 −101 −91 electronegativity 3.0 2.2 2.2 2.1 1.9 standard reduction potential (E°, V) (EV → EIII in acidic solution)|| +0.93 −0.28 +0.56 +0.65 — product of reaction with O2 NO2, NO P4O6, P4O10 As4O6 Sb2O5 Bi2O3 type of oxide acidic (NO2), neutral (NO, N2O) acidic acidic amphoteric basic product of reaction with N2 — none none none none product of reaction with X2 none PX3, PX5 AsF5, AsX3 SbF5, SbCl5, SbBr3, SbI3 BiF5, BiX3 product of reaction with H2 none none none none none
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