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nitrogen
Image: Wikimedia Commons

nitrogen

Chemical element, symbol N and atomic number 7; most abundant element in Earth atmosphere

Chemical elementchemical elementatmophile elementQ627

Also known as element 7 · ₇N

Symbol
Atomic number
Mass
Melting point
  • 63.05 K
Boiling point
  • 77.15 K
Density
  • 946.244 kg/m³
Discovered by
Discovered
  • 1772

Overview

All data

142 statements · 17% 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
Location of discovery
Electronegativity
  • 3
Has characteristic
Unicode character
Part of
Electron configuration
  • 1s² 2s² 2p³
  • [He] 2s² 2p³
Has use
Ionic radius
  • 0.16 ångström charge number: 3 · coordination number: 6
  • 0.13 ångström charge number: 5 · coordination number: 6
Formula
  • N₂
Different from
Thermal conductivity
  • 0.02583 watt per metre kelvin
Specific heat capacity
  • 1,040 joule per kilogram kelvin
Speed of sound
  • 333.6 m/s
Standard enthalpy of formation
  • 472.68 kilojoule per mole state of matter: gas
Standard molar entropy
  • 153.301 joule per mole kelvin state of matter: gas
Ionization energy
Crystal system
Atomic radius
  • 65 picometre
Covalent radius
  • 71 picometre
Van der Waals radius
  • 155 picometre

On other databases

77 identifiers linking nitrogen across the web's reference databases