Nitrogen Hydrogen Compounds. This review summarizes progress in this field from three aspects. water (H 2 O): Water is an excellent example of hydrogen bonding. A 3:1 mixture of concentrated hydrochloric acid and nitric acid, called aqua regia, is still stronger and successfully dissolves gold and platinum, because free chlorine and nitrosyl chloride are formed and chloride anions can form strong complexes. a) Uranus and Neptune have compositions very similar to Jupiter and Saturn. Ammonia, NH3, is a colorless, pungent, suffocating, highly water-soluble, gaseous compound, usually produced by the direct combination of nitrogen and hydrogen. One crystalline form of boron nitride (BN), for example, is nearly as hard as diamond and less easily oxidized and so is useful as a high-temperature abrasive. Nitrogen Fractions of Interest in Winemaking. It consists of the elements nitrogen and hydrogen. the formula NH3, Ammonia or azane, a compound of nitrogen and hydrogen. Hydrogen sulfide is particularly deceptive because it paralyzes the olfactory nerves; after a short exposure, one does not smell it. The bond is between the hydrogen of one water molecule and the oxygen atoms of another water molecule, not between the two hydrogen atoms (a common misconception). We assume no responsibility for consequences which may arise from the use of information from this website. The deposits of sulfur in volcanic regions may be the result of the oxidation of H2S present in volcanic gases. However, sea water contains many dissolved salts hence it can not be used directly. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (195.8C) and is used as a coolant. Most of the known varieties may be regarded as derived from ammonia, hydrogen cyanide, cyanogen, and nitrous or nitric acid. The laboratory preparation of ammonia is by the reaction of an ammonium salt with a strong base such as sodium hydroxide. The most important hydride of phosphorus is phosphine, PH3, a gaseous analog of ammonia in terms of both formula and structure. In one ammonia molecule, there is one nitrogen atom and three hydrogen atoms. Proteins are the small organic compound that consists of chains of amino acid. The ammonium ion is similar in size to the potassium ion; compounds of the two ions exhibit many similarities in their structures and solubilities. . 1) You may use almost everything for non-commercial and educational use. ammonia (NH 3): Hydrogen bonds form between hydrogen of one molecule and nitrogen of another. Smelling salts utilize this powerful odor. The other elements . It consists of the elements nitrogen and hydrogen. Hydrogen as a feedstock. Feel free to ask a question, leave feedback or take a look at one of our articles. A protein is made of amino acids. Ammonia is a compound. We will try to find the right answer to this particular crossword clue. Like ammonia, hydrazine is both a Brnsted base and a Lewis base, although it is weaker than ammonia. What's mostly nitrogen, hydrogen and mercury. N has an electronegativity value of 3.0, and H has a value of 2.2. In acidic solutions, hydrogen sulfide reduces Fe3+ to Fe2+, \({\text{MnO}}_{4}{}^{-}\) to Mn2+, \({\text{Cr}}_{2}{\text{O}}_{7}{}^{2-}\) to Cr3+, and HNO3 to NO2. Carbon: 1. Nitrogen and oxygen are both nonmetals, which almost always indicates the bond will be not be considered "ionic". Heat easily decomposes phosphine \(({\text{4PH}}_{3}\;\;{\text{P}}_{4}+{\text{6H}}_{2}),\) and the compound burns in air. By some definitions, "organic" compounds are . Two hydrogen atoms form a bond with each other to share electrons so that each has the more stable electronic configuration of helium with 2 electrons. Alkenes contain one or more carbon-carbon double bonds. With the exception of hydrogen fluoride, which has a strong hydrogen-fluoride bond, they are strong acids. It is always recommended to visit an institution's official website for more information. A carbohydrate has only Carbon, Hydrogen and Oxygen, with the hydrogen and oxygen in the ratio 2:1. So without nitrogen atoms the compound can not be a protein. The production of hydrogen sulfide by the direct reaction of the elements (H2 + S) is unsatisfactory because the yield is low. This article contains comparison of key thermal and atomic properties of hydrogen and nitrogen, two comparable chemical elements from the periodic table. Compounds of Hydrogen. Other than the noble gases, each of the nonmetals forms compounds with hydrogen. The chemical properties of ammonia are as follows: Chloramine, NH2Cl, results from the reaction of sodium hypochlorite, NaOCl, with ammonia in basic solution. Hydrogen bromide and hydrogen iodide cannot be prepared using sulfuric acid because this acid is an oxidizing agent capable of oxidizing both bromide and iodide. A farmer has 19 sheep All but 7 die How many are left? This page was last edited on 3 November 2022, at 19:38. The acid is also important in the production of other inorganic fluorides (such as BF3), which serve as catalysts in the industrial synthesis of certain organic compounds. Save my name, email, and website in this browser for the next time I comment. Hydrogen sulfide is as toxic as hydrogen cyanide; therefore, it is necessary to exercise great care in handling it. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Those of boron, titanium, zirconium, and tantalum have special applications. All the models used . Most of the known varieties may be regarded as derived from ammonia, hydrogen cyanide, cyanogen, and nitrous or nitric acid. What is judge James Edwards' party affiliation? Ammonia is a compound with the molecular formula of NH3. Search clues. Why CASE tools are not normally able to control Software crises. In the presence of a large excess of ammonia at low temperature, the chloramine reacts further to produce hydrazine, N2H4: \({\text{NH}}_{3}(aq)+{\text{OCl}}^{\text{}}(aq)\;\;{\text{NH}}_{2}\text{Cl}(aq)+{\text{OH}}^{\text{}}(aq)\), \({\text{NH}}_{2}\text{Cl}(aq)+{\text{NH}}_{3}(aq)+{\text{OH}}^{\text{}}(aq)\;\;{\text{N}}_{2}{\text{H}}_{4}(aq)+{\text{Cl}}^{\text{}}(aq)+{\text{H}}_{2}\text{O}(l)\). It is used chiefly for refrigeration, and in manufacturing of chemicals. Nitrogen compounds can be classified as mineral or organic. A. Ammonia (3 C, 17 P) H. Hydrates (1 C, 45 P) Hydrazinium compounds (5 P) Hydrides (7 C, 22 P) Hydrogen peroxide (1 C . Also of some importance are certain nitrides, solids formed by direct combination of metals with nitrogen, usually at elevated temperatures. The nitride ion is a much stronger base than the hydroxide ion: \({\text{Mg}}_{3}{\text{N}}_{2}(s)\;+\;{\text{6H}}_{2}\text{O}(l)\;\;\text{3Mg}{(\text{OH})}_{2}(s)+{\text{2NH}}_{3}(g)\). There is some information on various nitrogen-noble gas species, to a large extent because of the interest in their bonding . This may be offset by other factors: for example, amides are not basic because the lone pair is delocalised into a double bond (though they may act as acids at very low pH, being protonated at the oxygen), and pyrrole is not acidic because the lone pair is delocalised as part of an aromatic ring. Gas compounded of nitrogen and hydrogen, nh3. However, it is possible to prepare both hydrogen bromide and hydrogen iodide using an acid such as phosphoric acid because it is a weaker oxidizing agent. This process was developed during World War I to lessen the dependence of Germany on Chilean nitrate. Hydrogen sulfide is a weak diprotic acid that dissolves in water to form hydrosulfuric acid. Water is essential for all living things and our body contains about 65% water. Clue. Ammonia, NH 3, forms naturally when any nitrogen-containing organic material decomposes in the absence of air. The heavier halide ions (Cl, Br, and I) can act as reducing agents, and the lighter halogens or other oxidizing agents will oxidize them: \({\text{Cl}}_{2}(aq)+{\text{2e}}^{-}\;\;{\text{2Cl}}^{\text{}}(aq)\phantom{\rule{5em}{0ex}}E\text{}=1.36\;\text{V}\), \({\text{Br}}_{2}(aq)+{\text{2e}}^{-}\;\;{\text{2Br}}^{\text{}}(aq)\phantom{\rule{5em}{0ex}}E\text{}=1.09\;\text{V}\), \({\text{I}}_{2}(aq)+{\text{2e}}^{-}\;\;{\text{2I}}^{\text{}}(aq)\phantom{\rule{5em}{0ex}}E\text{}=0.54\;\text{V}\), \({\text{Br}}_{2}(aq)+\text{2HI}(aq)\;\;\text{2HBr}(aq)+{\text{I}}_{2}(aq)\phantom{\rule{5em}{0ex}}E\text{}=0.55\;\text{V}\). Which are small compounds that are made of carbon nitrogen oxygen hydrogen and sometimes sulfur? The structure of ammonia is shown with a central nitrogen atom and three hydrogen atoms. The crossword clue Nitrogen-hydrogen compound with 7 letters was last seen on the January 01, 2007. Which class of organic compounds contain a nitrogen and an oxygen atom? Hydrazine is a fuming, colorless liquid that has some physical properties remarkably similar to those of H2O (it melts at 2 C, boils at 113.5 C, and has a density at 25 C of 1.00 g/mL). For brevity, we will discuss only a few hydrogen compounds of the nonmetals here. . What is the mood and tone for the tale of tonyo the brave? 3H2O, are known that can be crystallised. Most chloride salts are soluble in water. Can someone put you on tv without your consent? Although the other applications are important, by far the greatest bulk of elemental nitrogen is consumed in the manufacture of nitrogen compounds. We think the likely answer to this clue is AMMONIA. Nitrogen and Nitrogen Compounds . They contain the elements carbon, hydrogen, oxygen, nitrogen, and sulfur. Ammonia, NH3, forms naturally when any nitrogen-containing organic material decomposes in the absence of air. Nitrogen compounds have a very long history, ammonium chloride having been known to Herodotus.They were well known by the Middle Ages. The atomic number of hydrogen is 1. For example: \({\text{H}}_{3}{\text{PO}}_{4}(l)+{\text{Br}}^{\text{}}(aq)\;\;\text{HBr}(g)+{\text{H}}_{2}{\text{PO}}_{4}{}^{\text{}}(aq)\). Organic compounds are molecules that are made up of carbon covalently bonded to other atoms, most commonly hydrogen, oxygen, and nitrogen. This category has the following 9 subcategories, out of 9 total. A carbon-nitrogen bond is a covalent bond between carbon and nitrogen and is one of the most abundant bonds in organic chemistry and biochemistry.. Nitrogen has five valence electrons and in simple amines it is trivalent, with the two remaining electrons forming a lone pair.Through that pair, nitrogen can form an additional bond to hydrogen making it tetravalent and with a positive charge in . The mixture of nitric and hydrochloric acids was known as aqua regia (royal water), celebrated for its ability to dissolve . Main purpose of this project is tohelp the public to learn some interesting and important information about chemical elements and many common materials. List the number of atoms for each element in this compound: H2SO4. Nitrogen Hydrogen Compounds. The amines, amino acids, and amides, for example, are derived from or closely related to ammonia. This last category includes one of the most well-studied organic nitrogen compounds, peroxyacetyl nitrate (PAN), which is an important lung and eye . Cookies are small files that are stored on your browser. Hydrogen and (depending on the stoichiometry) amides (salts of, The nitrogen atom in ammonia has its lowest possible. One method is by the action of an acid on an ionic phosphide. It burns rapidly and completely in air with substantial evolution of heat: \({\text{N}}_{2}{\text{H}}_{4}(l)+{\text{O}}_{2}(g)\;\;{\text{N}}_{2}(g)+{\text{2H}}_{2}\text{O}(l)\phantom{\rule{5em}{0ex}}\text{}H\text{}=-621.5\;\text{kJ}\;{\text{mol}}^{-1}\). 2) You may not distribute or commercially exploit the content, especially on another website. [18], Finally, although orthonitric acid (H3NO4), which would be analogous to orthophosphoric acid, does not exist, the tetrahedral orthonitrate anion NO34 is known in its sodium and potassium salts:[18], These white crystalline salts are very sensitive to water vapour and carbon dioxide in the air:[18], Despite its limited chemistry, the orthonitrate anion is interesting from a structural point of view due to its regular tetrahedral shape and the short NO bond lengths, implying significant polar character to the bonding. Nitrogen in various chemical forms plays a major role in large number of environmental issues. The chemical formula for ammonia is NH3.Chemical formula for ammonia is NH3. The reaction of concentrated sulfuric acid with a chloride salt produces hydrogen chloride both commercially and in the laboratory. Examples of Hydrogen Bonds. Ammonia, NH 3, forms naturally when any nitrogen-containing organic material decomposes in the absence of air. The applications of nitrogen compounds are naturally extremely widely varied due to the huge size of this class: hence, only applications of pure nitrogen itself will be considered here. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Organizing and providing relevant educational content, resources and information for students. Hydrogen sulfide, H2S, is a colorless gas that is responsible for the offensive odor of rotten eggs and of many hot springs. Phosphine is a colorless, very poisonous gas, which has an odor like that of decaying fish. Alkynes contain one or more carbon-carbon triple bonds. Synthetically produced ammonia and nitrates are key industrial fertilisers, and fertiliser nitrates are key pollutants in the eutrophication of water systems. Subcategories. It also contains basic descriptions and applications of both elements. They include hardening agents produced when alloy steels are heated in an atmosphere of ammonia, a process called nitriding. A colourless, highly corrosive liquid, it is much used in the production of fertilizers, dyes, drugs, and explosives. It is shown below: Step 1: Determine the valence electrons of hydrogen, carbon, and nitrogen atoms. Compounds of hydrogen are normally called hydrides, even though the hydride describes compounds that have an H- ion. Ammonia is written as NH3 which is a compound because compound consist two different chemical elements and in here it is NITROGEN Ammonia, NH3, is a colorless, pungent, suffocating, highly water-soluble, gaseous compound, usually produced by the direct combination of nitrogen and hydrogen. Nitrate is also a common ligand with many modes of coordination. Some of them, such as lead azide, Pb(N3)2, are used in detonators and percussion caps. If one or both of the two remaining bonds on the atom are attached to alkyl or aryl groups, the compound is a substituted amide. These multiple uses can be grouped into two large categories. Ammonia, NH 3, forms naturally when any nitrogen-containing organic material decomposes in the absence of air. In order to study the purification of hydrogen and its separation from gas mixtures by adsorption, different models describing the adsorption equilibrium of gas mixtures have been tested; seven of them have been compared with experimental multi-component data obtained from the literature. The major uses of phosphine are as a fumigant for grains and in semiconductor processing. Nitroglycerin and nitrocellulose are esters of nitric acid. It is an important and versatile acid in industry and is important for the manufacture of metal chlorides, dyes, glue, glucose, and various other chemicals. Due to its original isolation from Prussian blue (hydrated ferric ferrocyanide), hydrogen cyanaide is also known by the name of prussic acid.. It is made up of elements, nitrogen and hydrogen. In general, it is possible to prepare the halides by the general techniques used to prepare other acids. In a chemical formula, the number of atoms for each element is usually indicated by a _____. A role whose importance is being recognized for decades and will continue to grow and evolve. Oxygen: 3. You can learn more about how we use cookies by visiting our privacy policy page. Ammonia is a compound of nitrogen and hydrogen with the formula NH3. Nitrites are derived from nitrous acid (HNO2). The acid-base reaction with the weakly acidic ammonium ion gives ammonia . in or register, The difference between the two values is roughly 0.8, which is . Mineral compounds are essentially formed by the ammonium ion (NH4+ ), which is generated when ammonium salts are dissolved in water. Nitric acid is another popular commercial compound of nitrogen. Ammonia is also used in the preparation of hydrazine, N2H4, a colourless liquid used as a rocket fuel and in many industrial processes. Urea (CH4N2O) is the most common source of nitrogen in fertilizers. Industrially, ammonia (NH 3) is the most important compound of nitrogen and is prepared in larger amounts than any other compound, because it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilisers.It is a colourless alkaline gas with a characteristic pungent smell. Nitro compounds are obtained from the reaction (called nitration) between nitric acid and an organic compound. The amounts of hydrobromic acid and hydroiodic acid used commercially are insignificant by comparison. The amide functional group has an nitrogen atom attached to a carbonyl carbon atom. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Hydrogen is also commonly used in power stations as a coolant in generators due to a number of favorable properties that are a direct result of its light diatomic molecules. \(\overset{\underset{\mathrm{def}}{}}{=} \), Occurrence, Preparation, and Compounds of Hydrogen, \(({\text{4PH}}_{3}\;\;{\text{P}}_{4}+{\text{6H}}_{2}),\). Hydrogen cyanide. The largest use for hydrogen fluoride is in production of hydrochlorofluorocarbons for refrigerants, in plastics, and in propellants. What time does normal church end on Sunday? In most cases, sodium chloride is the chloride of choice because it is the least expensive chloride. The information contained in this website is for general information purposes only. Copyright 2022 Periodic Table | All Rights Reserved |, Hydrogen and Lithium Comparison Properties, Hydrogen and Fluorine Comparison Properties. Don't want to keep filling in name and email whenever you want to comment? Because hydrogen fluoride attacks glass, it can frost or etch glass and is used to etch markings on thermometers, burets, and other glassware. Occurrence and Preparation of the Representative Metals, Summarizing Occurrence and Preparation of the Representative Metals, Structure and General Properties of the Metalloids, Occurrence, Preparation, and Compounds of Boron and Silicon, Summarizing Structure and General Properties of the Metalloids, Structure and General Properties of the Nonmetals, Summarizing Structure and General Properties of the Nonmetals, Summarizing Occurrence, Preparation, and Compounds of Hydrogen, Occurrence, Preparation, and Properties of Carbonates, Summarizing Occurrence, Preparation, and Properties of Carbonates, Occurrence, Preparation, and Properties of Nitrogen, Summarizing Occurrence, Preparation, and Properties of Nitrogen, Occurrence, Preparation, and Properties of Phosphorus, Summarizing Occurrence, Preparation, and Properties of Phosphorus, Occurrence, Preparation, and Compounds of Oxygen, Summarizing Occurrence, Preparation, and Compounds of Oxygen, Occurrence, Preparation, and Properties of Sulfur, Occurrence, Preparation, and Properties of the Noble Gases, Continue With the Mobile App | Available on Google Play, http://cnx.org/contents/85abf193-2bd2-4908-8563-90b8a7ac8df6@12.1. Nitrogen Hydrogen Compounds. In haber process hydrogen and nitrogen react in the presence of finely divided iron catalyst. All of the hydrogen halides are very soluble in water, forming hydrohalic acids. We may share your site usage data with our social media, advertising, and analytics partners for these reasons. This modified article is licensed under a CC BY-NC-SA 4.0 license. Nitrogen hydrogen | H2N2 | CID 131711683 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities . Binary compounds containing only hydrogen and a halogen are hydrogen halides. Hydrogen as a feedstock for further chemical processes. Why do you get faster connection at work than home? It is used chiefly for refrigeration, and in manufacturing of chemicals. The commercial production of ammonia is by the direct combination of the elements in the Haber process: \({\text{N}}_{2}(g)+{\text{3H}}_{2}(g)\stackrel{\;\text{catalyst}\;}{\text{}}{\text{2NH}}_{3}(g)\phantom{\rule{5em}{0ex}}\text{}H\text{}=\text{92 kJ}\). The acid-base reaction with the weakly acidic ammonium ion gives ammonia . The laboratory preparation of ammonia is by the reaction of an ammonium salt with a strong base such as sodium hydroxide. Apart from its use in fertilisers and energy-stores, nitrogen is a constituent of organic compounds as diverse as Kevlar used in high-strength fabric and cyanoacrylate used in superglue. True or False: Two completely different compounds may contain identical elements. Hydrogen vs Nitrogen. Today's crossword puzzle clue is a general knowledge one: _ acids, organic compounds containing nitrogen and hydrogen; found in proteins. Ammonia, NH 3, forms naturally when any nitrogen-containing organic material decomposes in the absence of air. We realize that the basics in the materials science can help people to understand many common problems. True. Amino acids have an amino group which is #-NH_2#. Nitriding produces hard, highly wear-resistant surface (shallow case depths) of product with fair capacity for contact load, good bending fatigue strength and excellent resistance to seizure. Fluorine, chlorine, and bromine react directly with hydrogen to form the respective hydrogen halide. Since hydrogen sulfide is a weak acid, aqueous solutions of soluble sulfides and hydrogen sulfides are basic: \({\text{S}}^{2-}(aq)+{\text{H}}_{2}\text{O}(l)\;\;{\text{HS}}^{\text{}}(aq)+{\text{OH}}^{\text{}}(aq)\), \({\text{HS}}^{\text{}}(aq)+{\text{H}}_{2}\text{O}(l)\;\;{\text{H}}_{2}\text{S}(g)+{\text{OH}}^{\text{}}(aq)\). Unless specified, this website is not in any way affiliated with any of the institutions featured. Study with Quizlet and memorize flashcards containing terms like How does the composition of Uranus and Neptune compare to the composition of Jupiter and Saturn? AgCl, PbCl2, and Hg2Cl2 are the commonly encountered exceptions. Nitrogen-hydrogen gas. The escape of the gaseous hydrogen halide drives the reaction to completion. b) Uranus and Neptune are mostly rocky while Jupiter and Saturn are mostly hydrogen and helium. Nitroso compounds are obtained by the action of nitrous acid on an organic compound. What is t he story all about the crown jewels of heezenhurst by Sylvia mendez ventura? Chemistry Metals, Metalloids, and Nonmetals Occurrence, Preparation, and Compounds of Hydrogen. In fact, thousands - perhaps even millions. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. In addition to ammonia, numerous other compounds of nitrogen with hydrogen are knownfor example, hydrazine (H 2 NNH 2), diimide (HN NH), hy-drazoic acid [HN 3 (NNN)], and octazone (N 8 H 14); most of the compounds of nitrogen with hydrogen have been isolated only in the form of organic derivatives. Explain why the catalyst is finely divided; A mixture of N 2, H 2 and NH 3 was bubbled through 0.2M hydrochloric acid solution. The volatile silicon tetrafluoride escapes from these reactions. What are the two compounds of . Not paying attention - it's unnecessary to replace nitrogen by hydrogen. The following part deals with binary compounds composed of one nitrogen atom and hydrogen (mononitrogen compounds). Azides, which may be either inorganic or organic, are compounds that contain three nitrogen atoms as a group, represented as (N3). [19] The amount of nitrogen in a chemical substance can be determined by the Kjeldahl method. Hydrocarbons are organic compounds composed of only carbon and hydrogen. Hydrogen forms a vast array of compounds with carbon called the hydrocarbons, and an even vaster array with heteroatoms that, because of their general association with living things, are called organic compounds. Many of the nitrogen oxides are extremely volatile; they are prime sources of pollution in the atmosphere. The acid ionizes in two stages, yielding hydrogen sulfide ions, HS, in the first stage and sulfide ions, S2, in the second. In which case, the sulfide may oxidize to \({\text{SO}}_{3}{}^{2-}\) or \({\text{SO}}_{4}{}^{2-}\) (or to SO2 or SO3 in the absence of water): \({\text{2H}}_{2}\text{S}(g)+{\text{O}}_{2}(g)\;\;\text{2S}(s)+{\text{2H}}_{2}\text{O}(l)\). What logo is a black R with a star on a gold background? We use cookies and similar technologies to ensure our website works properly, personalize your browsing experience, analyze how you use our website, and deliver relevant ads to you. Organic compounds, in contrast, are carbon and hydrogen. and HYDROGEN. What is an example of a hydrogen compound? The study of their properties is known as organic chemistry and their study in the context of living organisms is known as biochemistry. water (H 2 O): Water is an excellent example of hydrogen bonding. In one ammonia molecule, there is one nitrogen atom and three hydrogen atoms. Ammonia also forms when ionic nitrides react with water. Your browser seems to have Javascript disabled. Hydrofluoric acid is unique in its reactions with sand (silicon dioxide) and with glass, which is a mixture of silicates: \({\text{SiO}}_{2}(s)+\text{4HF}(aq)\;\;{\text{SiF}}_{4}(g)+{\text{2H}}_{2}\text{O}(l)\), \({\text{CaSiO}}_{3}(s)+\text{6HF}(aq)\;\;{\text{CaF}}_{2}(s)+{\text{SiF}}_{4}(g)+{\text{3H}}_{2}\text{O}(l)\). It is easy to oxidize the sulfur in metal sulfides and in hydrogen sulfide, making metal sulfides and H2S good reducing agents. It is a strong acid and concentrated solutions are strong oxidising agents, though gold, platinum, rhodium, and iridium are immune to attack. The azides, like the halogen compounds, readily react with other substances by displacement of the so-called azide group and yield many kinds of compounds. These multiple uses can be grouped into two large categories.
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