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Phosphorus

Document v1 · published by Koskamo · updated 2026-10-04

Original source

Phosphorus (P) is chemical element 15, a nonmetal in group 15, period 3 (PubChem).

  • Atomic number: 15
  • Symbol: P
  • Group: 15
  • Period: 3
  • Atomic mass: 30.97376200 u
  • Electron configuration: [Ne]3s2 3p3
  • Electronegativity (Pauling scale): 2.19
  • Atomic radius (van der Waals): 180 pm
  • Ionization energy: 10.487 eV
  • Electron affinity: 0.746 eV
  • Oxidation states: +5, +3, -3
  • Standard state: Solid
  • Melting point: 317.3 K
  • Boiling point: 553.65 K
  • Density: 1.82 g/cm³
  • Chemical group: Nonmetal
  • Year discovered: 1669

Source and provenance

Original source
pubchem.ncbi.nlm.nih.gov
Published on Koskamo by
Koskamo
Citation version
Document v1
Reuse
PubChem periodic table data (NIH/NLM, pubchem.ncbi.nlm.nih.gov/ptable); group and period from Jefferson Lab via PubChem

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Version history

  1. Published by Koskamo

    Version 1