PZ =  15



Phosphorus
From the Greek "phos + -phoros", meaning "light-bearer"
(AM) Atomic Mass 30.97362  amu    Oxidation States +3, +5, -3
   (BP) Boiling Point 280  °C    (MP) Melting Point 44.1  °C
   (ρ) Density 1.83  g/cm3    Crystal Structure Cubic
   ( χ ) Electronegativity 2.1    (AR) Atomic Radius 1.06  Å
   Physical State Solid (C) Heat Capacity 0.769  J/g °C
Electronic-Config [Ne]  3s2  3p3     (I1) First Ionization E 1011.74  kJ/mol
   (ΔHvap) Heat of Vaporization 12.4  kJ/mol     (ΔHfus) Heat of Fusion 0.66  kJ/mol
   Year of Discovery 1669    Location of Discovery Germany
(E°) Standard Potential H3PO2 + H+⇔ P + 2 H2O (-0.510 V)
Stable isotopes  31P
Discovered/Synthesized by Hennig Brand
Natural Source The mineral/ore hydroxylapatite, fluorapatite, chlorapatite
Common Uses Fertilizer, acids, detergents, matches
Other Info One of the crucial building blocks of DNA and ATP
Used in fertilizers
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