Nitrogen Elemental Symbol
Nitrogen



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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 and its high purity 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. See the Chemicals Information Center for additional information. For additional information please see the Chemeicals Information Center.


  • Properties
  • Safety Data
  • Products
  • Research
  • Isotopes
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Nitrogen Properties


GENERAL PROPERTIES   PHYSICAL 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
       
IDENTIFIERS   MISCELLANEOUS  
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
InChI Key: QJGQUHMNIGDVPM-UHFFFAOYSA-N  
       
       
       
       
       

Nitrogen Products



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-