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phosphorus
Image: Wikimedia Commons

phosphorus

Chemical element with symbol P and atomic number 15

Chemical elementchemical elementlithophile elementQ674

Also known as element 15 · 15P

Symbol
Atomic number
  • 15
Mass
Density
  • 2,232.61 kg/m³
Discovered by
Discovered
  • 1669

Overview

All data

180 statements · 16% with external sources · numbers in brackets are citations

Oxidation state
  • -3
  • 3
  • 5
  • -2
  • -1
  • 1
  • 2
  • 4
Show 1 more
  • 0
Subclass of
Named after
Different from
Unicode character
Electronegativity
  • 2.19
Canonical SMILES
  • [P]
Part of
Formula
  • P
Electron configuration
  • 1s² 2s² 2p⁶ 3s² 3p³
  • [Ne] 3s² 3p³
Ionic radius
  • 0.17 ångström charge number: 5 · coordination number: 4
  • 0.38 ångström charge number: 5 · coordination number: 6
Has use
Made from material
Associated hazard
Space group
Crystal system
Thermal conductivity
  • 0.236 watt per metre kelvin
Point group
Standard enthalpy of formation
  • 316.5 kilojoule per mole state of matter: gas
  • 0.62 kilojoule per mole state of matter: liquid
  • -17.46 kilojoule per mole state of matter: solid
Standard molar entropy
  • 163.199 joule per mole kelvin state of matter: gas
  • 43.01 joule per mole kelvin state of matter: liquid
  • 41.09 joule per mole kelvin state of matter: solid
Ionization energy
IPA transcription
Has characteristic
Atomic radius
  • 100 picometre
Covalent radius
  • 107 picometre
Van der Waals radius
  • 180 picometre

On other databases

84 identifiers linking phosphorus across the web's reference databases