Difference Between Nitrogen and Nitrate

Main Difference – Nitrogen vs Nitrate

Nitrogen is a chemical element in the group 15 of the periodic table. It can form different types of molecules and ions by combining with different other elements such as hydrogen, oxygen, carbon, etc. Nitrate is one such ion in which a nitrogen atom is bonded to three oxygen atoms forming an anion. Nitrate ions can form different salt compounds by combining with different cations and covalent compounds such as esters of nitric acid. The main difference between nitrogen and nitrate is that nitrogen is a chemical element whereas nitrate is an anion.

Key Areas Covered

1. What is Nitrogen
     – Definition, Chemical Properties
2. What is Nitrate
     – Definition, Compounds of Nitrate
3. What is the Difference Between Nitrogen and Nitrate
     – Comparison of Key Differences

Key Terms: Amides, Ammines, Anion, Cation, Covalent, Nitrate, Nitrogen, Nitrogen Cycle, Oxygen, Relative Atomic Mass, Resonance

Difference Between Nitrogen and Nitrate - Comparison Summary

What is Nitrogen

Nitrogen is a chemical element in the group 15 of the periodic table and has the chemical symbol “N.” Nitrogen is a p block element according to its electron configuration; [He] 2s22p3. The atomic number of nitrogen is 7, and the relative atomic mass is about 14 amu. At room temperature and standard pressure, nitrogen exists as a diatomic gaseous compound which is colorless, odorless and tasteless.

Main Difference - Nitrogen vs Nitrate

Figure 1: Atomic Structure of Nitrogen

Nitrogen has three unpaired electrons. It tends to form three covalent bonds in order to complete the electron shells. Nitrogen exists as N2 gas in the atmosphere. It is a diatomic covalent compound.  There is a triple bond between the two nitrogen atoms.

Nitrogen has two stable isotopes: N-14 and N-15. But N-14 is the most stable and most abundant isotope. The abundance of this isotope is about 99%. Nitrogen forms a wide range of different compounds. Some examples include amides, amines, nitrates, nitrides,  azides, oxides, cyanide, etc.

Difference Between Nitrogen and Nitrate

Figure 2: Nitrogen Cycle

Nitrogen cycle shows the circulation of nitrogen in the environment. Nitrogen is an essential element for life on earth. It is included in the chemical composition of many important biological molecules such as nucleic acids, proteins, etc. Therefore, nitrogen occurs in the atmosphere, inside organisms, in the soil and is circulating between them.

What is Nitrate

Nitrate is an anion having the chemical formula NO3 . The molar mass of this ion is 62 g/mol. It is a covalent compound. In the Lewis structure, there are two oxygen atoms bonded to the nitrogen atom with single bonds and the other oxygen atom with a double bond. Therefore, nitrate ion has resonance structures. But the actual structure of this ion is a hybrid structure of all resonance structures. The geometry of the compound is trigonal planar.

Difference Between Nitrogen and Nitrate - 1

Figure 2: Resonance Structures of Nitrate Ion

When nitrate ion is bonded to a proton, it is called nitric acid. Nitric acid is a key ingredient for most synthesis reactions in organic chemistry. For example, nitrobenzene is synthesized by reacting benzene with a mixture of nitric acid, sulfuric acid, and water.

Nitrate ion can be found in ionic compounds as salts, and as a free aqueous ion. Nitrate salts are common on earth as mineral deposits. Some examples include ammonium nitrate, sodium nitrate, potassium nitrate, etc. Salts of nitrate are ionic compounds composed of nitrate ion bonded to a cation. Covalent compounds of nitrate include esters of nitric acid.

In the nitrogen cycle, nitrifying bacteria (Nitrobacter) converts nitrite ions into nitrate ions. But denitrifying bacteria (such as Pseudomonas) can convert nitrate into nitrogen gas.

Difference Between Nitrogen and Nitrate


Nitrogen: Nitrogen is a chemical element in the group 15 of the periodic table and has the chemical symbol “N.”

Nitrate: Nitrate is an anion having the chemical formula NO3 .


Nitrogen: Nitrogen is a chemical element.

Nitrate: Nitrate is an anion.

Electrical Charge

Nitrogen: A nitrogen atom has no net electrical charge.

Nitrate: Nitrate ion has -1 charge.

Nitrogen Cycle

Nitrogen: Nitrogen element circulates in the nitrogen cycle in different forms such as ammonia, nitrite, and nitrate.

Nitrate: Nitrifying bacteria in nitrogen cycle converts ammonium ion into nitrate ion whereas denitrifying bacteria convert nitrate ion into nitrogen gas.


Nitrogen: Nitrogen forms a wide range of different compounds including inorganic compounds and organic compounds.

Nitrate: Nitrate ion can be found in salts and in covalent compounds.


Nitrogen is a chemical element. Nitrate ion is an anion having -1 electrical charge. Nitrogen can be found circulating in the nitrogen cycle in different forms whereas nitrate ion can be found in the steps of nitrification and denitrification. The main difference between nitrogen and nitrate is that nitrogen is a chemical element whereas nitrate is an anion.


 1. “Nitrogen – Element information, properties and uses | Periodic Table.” Royal Society of Chemistry – Advancing excellence in the chemical sciences, .
2. “Nitrogen.” Wikipedia, Wikimedia Foundation, 2 Dec. 2017, .
3. “Nitrate.” National Center for Biotechnology Information. PubChem Compound Database, U.S. National Library of Medicine, .

Image Courtesy:

1. “Electron shell 007 Nitrogen” By Pumbaa (original work by Greg Robson) – File:Electron shell 007 nitrogen.png, via
2. “Nitrogen Cycle 1″ By Eme Chicano – Own work (CC0) via
3. “Nitrate ion resonance structures” via

About the Author: Madhusha

Madhusha is a BSc (Hons) graduate in the field of Biological Sciences and is currently pursuing for her Masters in Industrial and Environmental Chemistry. Her interest areas for writing and research include Biochemistry and Environmental Chemistry.

Leave a Comment

Related pages

bipolar vs unipolar depressiondefinition of boiling point in scienceart nouveau influencesdefinition of gram positive and gram negative bacteriawhat is the difference between inorganic and organic compoundsdefinition of dominant and recessive allelesdifference between sparkling and champagnescientific name of basil planteukaryotic transcription elongation stepscolonialism imperialismequation for owners equityarr accounting rate of returndefinition of absolute magnitudehow to save java program in notepadbewildered in a sentencedefinition of aldosehansel and gretel short storiesare jungles and rainforests the samethe difference between apoptosis and necrosisdifference centripetal and centrifugal forcegustatory imagerydefinition of multinational organizationchromatin consists of dna and rnawhat does acculturation meandefine maltosesashimi ingredientsbackcross and testcrossdelhi to srinagar buswhat is the definition of cotyledonaldose and ketose sugarswhat is the difference between saturated fat and unsaturated fatfunctions of noun clausesymbol for nitratealiphatic and aromatic hydrocarbonswhen to write sincerely or faithfullyteeth plural formchamfer or bevelslime capsulepredicate nominative and predicate adjectivedifference between monera and protistaugly duckling short storygranulocytes vs agranulocytesdifference between interrogative pronoun and interrogative adjectivedifference between rights and libertiesdifferences between anime and cartoonswhat is difference between oats and wheatascorbic acid common nametypes of sexual and asexual reproductionsymbol for nitratemeaning of conformeddifference between fudge and chocolateenquiry and inquiry differencewhat is the difference between yogurt and kefirnigiri & sashimitensile strength yieldforms of prepositionmaroon color psychologyhunan szechuandefinition of bilaterally symmetricalmultinational firm definitionnormative statement economicstransnational company meaningnormalizing annealingdefine noun and pronounessential adjective clause examplesrough endoplasmic reticulum locationcologne perfume differencedefine polypropylenehereditary diseases definitiondifference between english and black walnutswhats a civil servantppf economyexamples of synechdochecytoplasm cytosolmphil phd differencecitric acid ascorbic acidagranulocytesrules in subject verb agreement with 5 examples