Nitrogen Elemental Symbol

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Azote Stickstoff Azoto Nitrogênio Nitrógeno Kväve

Nitrogen element symbolNitrogen is a Block P, Group 15, Period 2 element. Its electron configuration is [He]2s22p3. In its elemental form, nitrogen's CAS number is7727-37-9. Nitrogen is an odorless, tasteless, colorless and mostly inert gas. It is the seventh most abundant element in the universe and it constitutes 78.09% (by volume) of Earth's atmosphere. Nitrogen was discovered by Daniel Rutherford in 1772.

Nitrogen information, including technical data, safety data, properties, research, applications and other useful facts are specified below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included. For additional nitrogen products please see the Chemicals Information Center.

  • Properties
  • Safety Data
  • Products
  • Research
  • Isotopes
  • Other Elements

Nitrogen Properties

Symbol: N Melting Point: -210 oC, -346 oF, 63.15 K
Atomic Number: 7 Boiling Point: -195.795 oC, -320.431 oF, 77.355 K
Atomic Weight: 14.01 Density: (0 °C, 101.325 kPa) 1.251 g/L
Element Category: nonmetal Liquid Density @ Melting Point: 0.808 g·cm−3
Group, Period, Block: 15 (pnictogens), 2, p Specific Heat: N/A
    Heat of Vaporization 5.56 kJ·mol−1
CHEMICAL STRUCTURE Heat of Fusion 0.72 kJ·mol−1
Electrons: 7 Thermal Conductivity: 25.83 × 10−3 W·m−1·K−1
Protons: 7 Thermal Expansion: N/A
Neutrons: 7 Electrical Resistivity: N/A
Electron Configuration: [He]2s22p3 Electronegativity: 3.04 (Pauling scale)
Atomic Radius: N/A Tensile Strength: N/A
Covalent Radius: 71±1 pm Molar Heat Capacity: 29.124 J·mol−1·K−1
Van der Waals radius: 155 pm Young's Modulus: N/A
Oxidation States: 5, 4, 3, 2, 1, −1, −2, −3 (strongly acidic oxide) Shear Modulus: N/A
Phase: Gas Bulk Modulus: N/A
Crystal Structure: hexagonal Poisson Ratio: N/A
Magnetic Ordering: diamagnetic Mohs Hardness: N/A
1st Ionization Energy: 1402.3 kJ·mol−1 Vickers Hardness: N/A
2nd Ionization Energy: 2856 kJ·mol−1 Brinell Hardness: N/A
3rd Ionization Energy: 4578.1 kJ·mol−1 Speed of Sound: gas, 27 °C) 353 m·s−1
CAS Number: 7727-37-9 Abundance in typical human body, by weight: N/A
ChemSpider ID: 20473555 Abundance in typical human body, by atom: N/A
PubChem CID: 947 Abundance in universe, by weight: N/A
MDL Number: MFCD00011416 Abundance in universe, by atom: N/A
EC Number: 231-783-9 Discovered By: Daniel Rutherford
Beilstein Number: N/A Discovery Date: 1772
SMILES Identifier: N  
InChI Identifier: InChI=1S/N Other Names: Azote, Stickstoff, Azoto, Nitrogênio

Nitrogen Products

Nitrate Compounds

Aluminum Nitrate
Antimony Nitrate
Barium Nitrate
Barium Nitrate Hydrate
Beryllium Nitrate
Bismuth Nitrate
Cadmium Nitrate
Calcium Nitrate
Calcium Nitrate Hydrate
Cerium Nitrate
Cesium Nitrate
Chromium Nitrate
Cobalt Nitrate
Copper Nitrate
Copper Nitrate/Ammonium Chloride
Copper(II) Nitrate Hemi(pentahydrate)
Dysprosium Nitrate
Erbium Nitrate
Erbium(III) Nitrate Pentahydrate
Europium Magnesium Nitrate
Europium Nitrate
Europium Nitrate Hydrate
Europium(III) Nitrate Pentahydrate
Gadolinium Nitrate
Gallium Nitrate
Gold Nitrate
Hafnium Nitrate
Holmium Nitrate
Indium Nitrate
Indium(III) Nitrate Hydrate
Iron Nitrate
Lanthanum Nitrate
Lanthanum(III) Nitrate Hydrate
Lanthanum(III) Nitrate Hexahydrate
Lead Nitrate
Lithium Nitrate
Lutetium Nitrate
Magnesium Nitrate
Manganese Nitrate
Neodymium Nitrate
Neodymium(III) Nitrate Hexahydrate
Neodymium Nitrate Hydrate
Nickel Nitrate
Palladium Nitrate
Palladium(II) Nitrate Dihydrate
Platinum Nitrate
Praseodymium Nitrate
Rhodium Nitrate
Rubidium Nitrate
Ruthenium Nitrate
Samarium Nitrate
Scandium Nitrate
Scandium(III) Nitrate Hydrate
Silver Nitrate
Sodium Nitrate
Strontium Nitrate
Tantalum Nitrate
Tellurium Nitrate
Terbium Nitrate
Thallium Nitrate
Thorium Nitrate
Thulium Nitrate
Tin Nitrate
Titanium Nitrate
Uranium Nitrate
Ytterbium Nitrate
Yttrium Nitrate
Zinc Nitrate
Zirconium Nitrate

Nitrate Solutions

Aluminum Nitrate Solution
Antimony Nitrate Solution
Barium Nitrate Solution
Beryllium Nitrate Solution
Bismuth Nitrate Solution
Cadmium Nitrate Solution
Calcium Nitrate Solution
Cerium Nitrate Solution
Cesium Nitrate Solution
Chromium Nitrate Solution
Cobalt Nitrate Solution
Copper Nitrate Solution
Dysprosium Nitrate Solution
Erbium Nitrate Solution
Europium Nitrate Solution
Gadolinium Nitrate Solution
Gallium Nitrate Solution
Gold Nitrate Solution
Hafnium Nitrate Solution
Holmium Nitrate Solution
Indium Nitrate Solution
Iron Nitrate Solution
Lanthanum Nitrate Solution
Lead Nitrate Solution
Lithium Nitrate Solution
Lutetium Nitrate Solution
Magnesium Nitrate Solution
Manganese Nitrate Solution
Neodymium Nitrate Solution
Nickel Nitrate Solution
Palladium Nitrate Solution
Potassium Nitrate Solution
Praseodymium Nitrate Solution
Rhodium Nitrate Solution
Rubidium Nitrate Solution
Ruthenium Nitrate Solution
Samarium Nitrate Solution
Scandium Nitrate Solution
Silver Nitrate Solution
Sodium Nitrate Solution
Strontium Nitrate Solution
Tellurium Nitrate Solution
Terbium Nitrate Solution
Thallium Nitrate Solution
Thorium Nitrate Solution
Thulium Nitrate Solution
Tin Nitrate Solution
Titanium Nitrate Solution
Uranium Nitrate Solution
Ytterbium Nitrate Solution
Yttrium Nitrate Solution
Zinc Nitrate Solution
Zirconium Nitrate Solution

Metal Amides

Lithium Amide
Lithium Amide Powder
Mercury(II) Amidochloride
Sodium Amide

Metal Azides

Cesium Azide
Lithium Azide Solution
Sodium Azide
Tris(3,3,4,4,5,5,6,6,7,7,8, 8,8-tridecafluorooctyl)tin Azide

Nitride Compounds

Aluminum Oxynitride
Aluminum Nitride
Antimony Nitride
Barium Nitride
Beryllium Nitride
Boron Nitride
Boron Nitride Rods
Cadmium Nitride
Calcium Nitride
Cerium Nitride
Chromium Nitride
Copper Nitride
Dysprosium Nitride
Erbium Nitride
Europium Nitride
Gadolinium Nitride GdN
Gadolinium Nitride GdN3
Gallium Nitride
Germanium Nitride
Hafnium Nitride
Holmium Nitride
Indium Nitride
Indium Gallium Nitride
Iron Nitride (Fe2N)
Iron Nitride (Fe4N)
Iron Nitride (Fe6N2)
Lanthanum Nitride
Lithium Nitride
Lutetium Nitride
Magnesium Nitride
Manganese Nitride Mn2N
Manganese Nitride Mn4N
Molybdenum Nitride MoN
Molybdenum Nitride Mo2N
Neodymium Nitride NdN
Neodymium Nitride NdN3
Nickel Nitride
Niobium Nitride
Praseodymium Nitride
Samarium Nitride
Scandium Nitride
Silicon Nitride
Silicon Aluminum Oxynitride
Silicon Titanium Nitride
Sodium Nitride
Strontium Nitride
Tantalum Nitride
Terbium Nitride
Thorium Nitride
Thulium Nitride
Titanium Nitride
Tungsten Nitride
Uranium Nitride
Vanadium Nitride
Ytterbium Nitride
Yttrium Nitride
Zinc Nitride
Zirconium Nitride

Nitride Forms

Aluminum Nitride Powder
Aluminum Nitride (Machinable) Rod
Aluminum Nitride (Machinable) Sheet
Aluminum Nitride Sheet
Aluminum Nitride Wafer
Boron Nitride Crucibles
Boron Nitride Crystal
Boron Nitride Film
Boron Nitride Flakes
Boron Nitride Foam
Boron Nitride Honeycomb
Boron Nitride Micropowder
Boron Nitride Parts
Boron Nitride Rods
Boron Nitride Shapes
Boron Nitride Sheet
Boron Nitride Sponge
Boron Nitride Tube
Boron Nitride Wool
Boron Nitride Ultrafine Powder
Pyrolytic Boron Nitride Crucibles
Gallium Nitride Wafer
Silicon Nitride/Aluminum Nitride/Aluminum Oxide Sheet
Silicon Nitride Balls
Silicon Nitride Carbide Foam
Silicon Nitride Carbide Honeycomb
Silicon Nitride Powder
Silicon Nitride Rod
Silicon Nitride Spheres
Silicon Nitride Carbide Sponge
Silicon Nitride Carbide Wool
Silicon Nitride Foam
Silicon Nitride Honeycomb
Silicon Nitride Sponge
Silicon Nitride Tubes
Silicon Nitride Whisker
Silicon Nitride Wool
Titanium Nitride Powder

Nitride Sputtering Targets

Aluminum Nitride Sputtering Target
Boron Nitride Sputtering Target
Chromium Nitride Sputtering Target
Gallium Nitride Sputtering Target
Germanium Nitride Sputtering Target
Hafnium Nitride Sputtering Target
Nickel Nitride Sputtering Target
Silicon Nitride Sputtering Target
Titanium Nitride Sputtering Target
Vanadium Nitride Sputtering Target
Zirconium Nitride Sputtering Target


Aluminum Nitride Nanoparticles
Aluminum Nitride Nanotubes
Boron Nitride Nanoparticles
Gold Nanoparticles, Amine Functionalized
Gold Nanorods, Amine Terminated
Niobium Nitride Nanoparticles
Silicon Carbide-Nitride Nanoparticles
Silicon Nitride Nanoparticles
Titanium Nitride Nanoparticles
Vanadium Nitride Nanoparticles

Other Compounds
Ruthenium(III) Nitrosyl Chloride
Ruthenium(III) Nitrosyl Chloride Hydrate
Ruthenium(III) Nitrosylacetate
Ruthenium(III) Nitrosylnitrate
Ruthenium(III) Nitrosyl Nitrate Solution
Silver Nitrite
Sodium Nitrite
Cyanide-based Compounds

Calcium Cyanamide
Copper(I) Thiocyanate
Gold Cyanide
Gold(I) Potassium Cyanide
Gold(I) Sodium Cyanide
Iridium Potassium Cyanide
Mercury(II) Cyanide
Palladium(II) Cyanide
Potassium Copper(I) Cyanide
Platinum(II) Cyanide
Potassium Cyanate
Potassium Cyanide
Potassium Dicyanoargentate
Potassium Ferricyanide
Potassium Ferrocyanide Solution
Potassium Hexacyanochromate(III)
Potassium Hexacyanocobaltate(III)
Potassium Hexacyanoiridate(III) Hydrate
Potassium Hexacyanomanganate
Potassium Tetracyanonickelate(II) Hydrate
Potassium Tetranitroplatinate(II)
Silver Cyanate
Silver Cyanide
Silver Cyanide- 13C,15N
Silver Potassium Cyanide
Sodium Cyanoborohydride Reagent Grade
Sodium Cyanoborohydride Solution
Sodium Cyanide
Sodium Ferrocyanide Decahydrate
Sodium Hydrogencyanamide
Sodium Tetracyanoplatinate(II) Hydrate

Ammonium Compounds

Aluminum Ammonium Sulfate
Aluminum Ammonium Sulfate Dodecahydrate
Ammonia Beryllium Fluoride
Ammonium Biborate Tetrahydrate
Ammonia Borane
Ammonium Bromide
Ammonium Chloroiride
Ammonium Chloropalladate
Ammonium Chloropalladite
Ammonium Chloroplatinate
Ammonium Chromate
Ammonium Chromium(III) Sulfate Dodecahydrate
Ammonium Cobalt Phosphate Anhydrous Ammonium Cobalt Phosphate Monohydrate Ammonium Cobalt(II) Sulfate Hexahydrate
Ammonium Cupric Chloride
Ammonium Cupric Sulfate Hexahydrate Ammonium Dichromate
Ammonium Dihydrogen Phosphate
Ammonium Fluoride
Ammonium Heptafluorotantalate(V)
Ammonium Hexabromoosmiate(IV)
Ammonium Hexabromotellurate(IV)
Ammonium Hexachloroosmate
Ammonium Hexachlorotellurate(IV)
Ammonium Hexacyanoferrate(II) Hydrate
Ammonium Hexafluoroniobate
Ammonium Hexafluorosilicate
Ammonium Hydroxide Solution
Ammonium Iodide
Ammonium Iron(II) Sulfate Dodecahydrate
Ammonium Iron(II) Sulfate Hexahydrate
Ammonium Iron(II) Sulfate Solution
Ammonium Magnesium Phosphate Hydrate
Ammonium Metatungstate Hydrate
Ammonium Nickel(II) Sulfate Hexahydrate
Ammonium Niobate(V) Oxalate Hydrate
Ammonium Paratungstate
Ammonium Tetrachloroaurate(III) Hydrate
Ammonium Tetrachlorocuprate(II) Dihydrate
Ammonium Tetrathiotungstate
Ammonium Thiosulfate
Ammonium Trifluoromethanesulfonate
Ammonium Tungstate
Ammonium Vanadium(II) Sulfate
Antimony Ammonium Fluoride
Borane Ammonia Complex
Cerium Ammonium Nitrate
Cerium(IV) Ammonium Sulfate Dihydrate
Copper Nitrate/Ammonium Chloride
Ferric Ammonium Sulfate Dodecahydrate
Ferrous Ammonium Sulfate Hexahydrate
Lithium Ammonia Borane

Select Organometallic Compounds

See AE Organometallics for a more comprehensive list.

Barium bis(trifluoromethylsulfonyl)imide
Lithium bis(trifluoromethylsulfonyl)imide
Magnesium bis(trifluoromethylsulfonyl)imide
Potassium bis(fluorosulfonyl)imide
Potassium bis(trifluoromethylsulfonyl)imide
Silver bis(trifluoromethylsulfonyl)imide
Sodium bis(trifluoromethylsulfonyl)imide
Ytterbium(III) Trifluoromethanesulfonimide
Zinc bis(trifluoromethylsulfonyl)imide
(triphenylphosphine)gold(I) (2:1) Toluene Adduct

Diammineplatinum(II) Nitrite Solution
Diamminepalladium(II) Nitrite Solution
Tetraammineplatinum(II) Nitrate

Tetrabutylammonium Borohydride
Tetrabutylammonium Cyanoborohydride
Tetrabutylammonium Fluoride Trihydrate

Lithium Diisopropylamide
Magnesium bis(diisopropyl)amide

Lithium bis(trimethylsilyl)amide Solution
Lithium bis(fluorosulfonyl)amide Solution
Sodium bis(trimethylsilyl)amide
Sodium bis(trimethylsilyl)amide Solution
Zinc bis(trimethylsilyl)amide
Silver Sulfadiazine
Titanium(IV) bis(ammonium lactato)dihydroxide Solution
trans-Dinitrobis(ethylenediamine)cobalt(III) Nitrate

Recent Research & Development for Nitrogen

  • Z.H. Cui, X.X. Guo, Manganese monoxide nanoparticles adhered to mesoporous nitrogen-doped carbons for nonaqueous lithium–oxygen batteries, Journal of Power Sources, Volume 267, 1 December 2014
  • Xiaoling Yang, Wenjian Zou, Yunhe Su, Yihua Zhu, Hongliang Jiang, Jianhua Shen, Chunzhong Li, Activated nitrogen-doped carbon nanofibers with hierarchical pore as efficient oxygen reduction reaction catalyst for microbial fuel cells, Journal of Power Sources, Volume 266, 15 November 2014
  • Xin Qing, Jingjing Shi, Chengyu Ma, Mengyang Fan, Zhengyu Bai, Zhongwei Chen, Jinli Qiao, Jiujun Zhang, Simultaneous formation of nitrogen and sulfur-doped transition metal catalysts for oxygen reduction reaction through pyrolyzing carbon-supported copper phthalocyanine tetrasulfonic acid tetrasodium salt, Journal of Power Sources, Volume 266, 15 November 2014
  • Guanghua Wang, Kezhu Jiang, Mingli Xu, Chungang Min, Baohua Ma, Xikun Yang, A high activity nitrogen-doped carbon catalyst for oxygen reduction reaction derived from polyaniline-iron coordination polymer, Journal of Power Sources, Volume 266, 15 November 2014
  • Baofeng Wang, Junsheng Wang, Jie Cao, Honghua Ge, Yufeng Tang, Nitrogen-doped Li4Ti5O12 nanosheets with enhanced lithium storage properties, Journal of Power Sources, Volume 266, 15 November 2014
  • A-Peng Liu, Liu-Yong Cheng, Li Chen, Shi-Lei Su, Hong-Fu Wang, Shou Zhang, Quantum phase flip gate between distant nitrogen-vacancy-center ensembles coupled to superconducting flux qubits, Optics Communications, Volume 331, 15 November 2014
  • C. Gómez-Polo, S. Larumbe, M. Monge, Room temperature ferromagnetism and absorption red-shift in nitrogen-doped TiO2 nanoparticles, Journal of Alloys and Compounds, Volume 612, 5 November 2014
  • Yunhe Su, Hongliang Jiang, Yihua Zhu, Wenjian Zou, Xiaoling Yang, Jianding Chen, Chunzhong Li, Hierarchical porous iron and nitrogen co-doped carbons as efficient oxygen reduction electrocatalysts in neutral media, Journal of Power Sources, Volume 265, 1 November 2014
  • Yanhua Fan, Chunhua Ma, Boyang Liu, Haiyan Chen, Lihua Dong, Yansheng Yin, Nitrogen doped anatase TiO2 sheets with dominant {001} facets for enhancing visible-light photocatalytic activity, Materials Science in Semiconductor Processing, Volume 27, November 2014
  • Fei Wang, Lei Feng, Dongmei Zhang, Qingguo Tang, Dan Feng, A first-principles calculation on electronic structure and optical performance of chromium and nitrogen codoped anatase titanium dioxide, Journal of Alloys and Compounds, Volume 611, 25 October 2014
  • Jing-Chuan Song, Zhong-Yuan Lu, Zhao-Yan Sun, A facile method of synthesizing uniform resin colloidal and microporous carbon spheres with high nitrogen content, Journal of Colloid and Interface Science, Volume 431, 1 October 2014
  • C.M. Duque, A.L. Morales, M.E. Mora-Ramos, C.A. Duque, Exciton-related nonlinear optical response and photoluminescence in dilute nitrogen cylindrically shaped quantum dots, Journal of Luminescence, Volume 154, October 2014
  • Guofu Ma, Yajuan Wu, Kanjun Sun, Hui Peng, Haiping Wang, Ziqiang Lei, High performance nitrogen-doped carbon for supercapacitor obtained by carbonizing eco-friendly and cheap polyaspartic acid, Materials Letters, Volume 132, 1 October 2014
  • Zulin Hua, Zhangyan Dai, Xue Bai, Wei Pan, Xiaoyuan Zhang, Wenqiang Ma, Xin Huang, Li Gu, Zero-valent nanophase iron and nitrogen co-modified titania nanotube arrays: Synthesis, characterization, and enhanced visible-light photocatalytic performance, Materials Science in Semiconductor Processing, Volume 26, October 2014
  • Chiyao Bai, Juan Li, Songbai Liu, Xiaoyu Yang, Xiaodan Yang, Yin Tian, Kecheng Cao, Ying Huang, Lijian Ma, Shoujian Li, In situ preparation of nitrogen-rich and functional ultramicroporous carbonaceous COFs by “segregated” microwave irradiation, Microporous and Mesoporous Materials, Volume 197, October 2014
  • Mingjiang Xie, Yifen Xia, Jiyuan Liang, Lanhua Chen, Xuefeng Guo, Ordered nitrogen doped mesoporous carbon assembled under aqueous acidic conditions and its electrochemical capacitive properties, Microporous and Mesoporous Materials, Volume 197, October 2014
  • J. Rychlý, L. Rychlá, A. Fiedlerová, Š. Chmela, M. Hronec, Thermally and UV initiated degradation of polypropylene in the presence of 2,5 bis(2-furylmethylene) cyclopentanone and heterogeneous distribution of hydroperoxides assessed by non-isothermal chemiluminescence in nitrogen, Polymer Degradation and Stability, Volume 108, October 2014
  • Liqiang Gu, Guoan Chen, Youwei Yao, Two novel phosphorus–nitrogen-containing halogen-free flame retardants of high performance for epoxy resin, Polymer Degradation and Stability, Volume 108, October 2014
  • Z. Seker, H. Ozdamar, M. Esen, R. Esen, H. Kavak, The effect of nitrogen incorporation in DLC films deposited by ECR Microwave Plasma CVD, Applied Surface Science, Volume 314, 30 September 2014
  • Jian-Wen Shi, Hui-Ying Ai, Jian-Wei Chen, Hao-Jie Cui, Ming-Lai Fu, The composite of nitrogen-doped anatase titania plates with exposed {0 0 1} facets/graphene nanosheets for enhanced visible-light photocatalytic activity, Journal of Colloid and Interface Science, Volume 430, 15 September 2014

Nitrogen Isotopes

Nitrogen has two stable isotopes: 14N and 15N.

Nuclide Symbol Isotopic Mass Half-Life Nuclear Spin
14N 14.0030740048 Stable 1+
15N 15.0001088982 Stable 1/2-