Phosphorus

Latin namePhosphorum
English namePhospohorus
chemical symbolP
atomic number15
relative atomic mass30,973762
period3
groupV.A
classificationnonmetals
discovery year1669
discovererH. Brandt
melting point [°C]44,1
boiling point [°C]277
density [g cm-3]1,82
electronegativity [Pauling]2,19
oxidation states-I, III, V, VII
electron configuration[Ne]3s2 3p3
atomic radius [pm]98
covalent radius [pm]106
specific heat [J g-1K-1]0,77
heat of fusion [kJ mol-1]0,657
thermal conductivity [W m-1 K-1]0,236
el. conductivity [S m-1]1.107
1. ionizing potential [eV]10,4867
2. ionizing potential [eV]19,725
3. ionizing potential [eV]30,18
state at normal conditionssolid

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