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Topic: Nitrogen Group

Related Topics

Periodic table group

Group 15 element

Carbon group

Group 6 element

Group 5 element

Boron group

Periodic table

Group 13 element

Carbon group

Group 4 element

Group 7 element

Group 3 element

Chemical series

Periodic table (standard)

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	Periodic table group - Wikipedia, the free encyclopedia
		A periodic table group is a vertical column in the periodic table of the chemical elements.
		The modern explanation of the pattern of the periodic table is that the elements in a group have similar (conch) configurations of the outermost electron shells of their atoms: as most chemical properties are dominated by outer electron interactions, this tends to give elements in the same group similar physical and chemical properties.
		The Roman numeral names are the original traditional names of the groups; the Arabic numeral names are those recommended by the International Union of Pure and Applied Chemistry (IUPAC) to replace the old names in an attempt to reduce the confusion generated by the two older, but mutually confusing, schemes.
	en.wikipedia.org /wiki/Periodic_table_group (488 words)

	Nitrogen group - Wikipedia, the free encyclopedia
		group VA) are also known as IUPAC Group 15 (formerly Group V) of the periodic table.
		This group has the defining characteristic that all the component elements have 5 electrons in their outermost shell, that is 2 electrons in the s subshell and 3 in the p subshell.
		The most important element of this group is Nitrogen (N), which in its diatomic form is the principal component of air.
	en.wikipedia.org /wiki/Pnictogen (305 words)

	Nitrogen pentoxide (PIM 283)
		Nitrogen dioxide and nitric oxide are the principal hazards.
		Nitrogen oxides are largely absorbed by and react with pulmonary alveolar structures and terminal respiratory bronchioles.
		Milne JEH (1969) Nitrogen dioxide inhalation and bronchiolitis obliterans.
	www.inchem.org /documents/pims/chemical/pimg017.htm (2621 words)

	Nitrogen, oxides of (EHC 4, 1977)
		Exposure to nitrogen dioxide increased the susceptibility of experimental animals to both bacterial and viral respiratory infections; this response was clearly dose-related.
		Nitrogen dioxide interferes with the lung's ability to remove inhaled deposited particles efficiently by altering the phagocytic, enzymatic, and functional processes of the alveolar macrophages and of the ciliated epithelial cells.
		For example, a study to evaluate the effects of nitrogen dioxide on the incidence of acute respiratory disease in children and their parents living near a large point source of this pollutant demonstrated an excess rate of respiratory illness in comparison with a control group.
	www.inchem.org /documents/ehc/ehc/ehc004.htm (15584 words)

	Untitled (Site not responding. Last check: 2007-11-03)
		Group B diamonds are 13C-enriched (d13C = -5‰ to +3‰), a signature that may suggest a crustal origin for the carbon.
		Low-nitrogen group B diamonds show evidence of rapid and unstable growth contemperaneous with deformation in the form of non-planar growth facets and displacement and brecciation of structures that have been rehealed, with episodes of diamond precipitation, and show subsequent overgrowths.
		The characteristics of the group B diamonds are consistent with formation in a subducted oceanic plate.
	www.es.mq.edu.au /gemoc/annrep_1997/abs97/Davies497.htm (719 words)

	Amines
		The bond between the carbonyl carbon and the nitrogen of the amine or ammonia is called the amide bond.
		In the cell the amino group is protonated and the carboxyl group is ionized to the carboxylate anion.
		The amide bond that forms between the carboxyl group of one amino acid and the amino group of another is called the peptide bond.
	www.chem.latech.edu /~deddy/chem121/Amine.htm (598 words)

	SparkNotes: Structure of Nucleic Acids: Terms
		Of the four nitrogen bases, adenine and guanine are purines, while cytosine and thymine are pyrimidines.
		The phosphate links to the sugar group, carries a negative charge because of the chemical interaction between phosphorous and oxygen, and forms the exterior of the phosphate backbone.
		Ribose - The sugar group of RNA, a five-membered sugar ring containing one oxygen and four carbons with one additional carbon attached to the 4' carbon in the ring and hydroxyl groups attached to the 1', 2', 3', and 5' carbons.
	www.sparknotes.com /biology/molecular/structureofnucleicacids/terms.html (986 words)

	Class Definition for Class 562 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES
		Compounds wherein the sulfonate group is attached indirectly to boron or phosphorus by nonionic bonding.
		Compounds wherein the sulfonate group is attached indirectly to nitrogen by nonionic bonding.
		Compounds wherein the sulfonate group is attached indirectly by nonionic bonding to a chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) that is not part of a sulfonate group.
	www.uspto.gov /go/classification/uspc562/defs562.htm (3405 words)

	The Nitrogen Group of Elements (Site not responding. Last check: 2007-11-03)
		Nitrogen is the most important element in Group V of the Periodic Table.
		Diatomic nitrogen is the principal constituent of the air.
		When bonded to hydrogen in the form of ammonia, nitrogen is an essential plant nutrient.
	hyperphysics.phy-astr.gsu.edu /hbase/pertab/ng.html (95 words)

	[No title] (Site not responding. Last check: 2007-11-03)
		The a-nitrogen protected Ca-carboxamide amino acid may be derived from any amino acid with a side chain comprising a heteroatom.
		After amidation the trityl protecting group may be readily removed using known conditions such as by treating with, for example, trifluoroacetic acid and triisopropylsilane in a suitable solvent such as dichloromethane.
		The precise conditions required to cleave the peptide amide from the solid support in step (e) vary with the nature of the side chain of the a-nitrogen protected Ca-carboxamide amino acid and the linker group on the support and are known in the art.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/93302.031113&ELEMENT_SET=DECL (5485 words)

	Interactive Turf Tip: 2002-01
		Nitrogen in these forms is developed by the combination of N2 found in the atmosphere with other substances, primarily H2, through forced chemical reactions known as the Haber-Bosch process.
		The water-insoluble synthetic organic nitrogen group is primarily composed of ureaformaldehydes (UF) and methylene ureas (MU).
		Carriers that are water-soluble release nitrogen more quickly to the turfgrass plant than other N types, especially during cooler temperatures and have a great chance of being utilized by a turf during a cool spring.
	www.interactiveturf.com /tips/2002_01.htm (1416 words)

	Phosphorus - LearnThis.Info Enclyclopedia (Site not responding. Last check: 2007-11-03)
		A multivalent, nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate rocks and in all living cells but is never naturally found alone.
		It is highly reactive, emits a faint glow upon uniting with oxygen (hence its name, Latin for 'morning star', from Greek words meaning 'light' and 'bring'), occurs in several forms, and is an essential element for living organisms.
		The most common are red and white phosphorus, both of which are tetrahedral groups of four atoms.
	encyclopedia.learnthis.info /p/ph/phosphorus.html (1080 words)

	Untitled (Site not responding. Last check: 2007-11-03)
		Colour variations on a CL image are mainly related to variations in nitrogen content between different parts of the diamond, and to a lesser extent to the presence of other trace impurities.
		Nitrogen is the most common impurity incorporated in the diamond lattice (Type I) and produces a variable blue colour on the CL image.
		In contrast, diamonds of the nitrogen-poor group have complex internal structures, with thick concentric non-planar Type Ia and Type II layers that may indicate unstable and dynamic growth histories, during which deformation occurred simultaneously with diamond growth.
	www.es.mq.edu.au /gemoc/annrep_1997/abs97/Davies397.htm (1282 words)

	Untitled Document
		Nitrogen balance can be easily summed up as the amount of nitrogen (protein) coming in compared to the amount of nitrogen leaving the animal.
		Nitrogen can leave the animal in forms including urea and ammonia in the urine, as undigested protein in the feces, and as protein incorporated into bacterial cells.
		Nitrogen in the form of ammonia is very toxic and animals go through great lengths to ensure that it is promptly excreted or incorporated into less toxic compounds such as urea or uric acid.
	web.utk.edu /~amathew/845-R2.html (5177 words)

	ScienceDaily: Phosphorus (Site not responding. Last check: 2007-11-03)
		Phosphorus, (from the Greek language phôs meaning "light", and phoros meaning "bearer"), is the chemical element in the periodic table that has the symbol P and atomic number 15.
		A multivalent nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate rocks and in all living cells.
		The most common are red and white phosphorus, both of which consist of networks of tetrahedrally arranged groups of four phosphorus atoms.
	www.sciencedaily.com /encyclopedia/phosphorus (3091 words)

	Nitrogen-Regulated Group 2 Sigma Factor from Synechocystis sp. Strain PCC 6803 Involved in Survival under Nitrogen ...
		Cyanobacteria are able to use a number of different nitrogen sources (17).
		be increased in the absence of nitrogen (8).
		NtcA, a global nitrogen regulator from the cyanobacterium Synechococcus that belongs to the Crp family of transcriptional regulators.
	jb.asm.org /cgi/content/full/183/3/1090 (3760 words)

	Biochemistry: Nitrogen Metabolism and Biochemical Nutrition
		This is an isomerization reaction: the carboxyl group is rearranged and put on the end of the molecule.
		It is the addition of a nitrogen group from the side-chain of glutamine.
		Adenosyl group of SAM may be transferred in the conversion of vitamin B12 (Cobalamin) to storage form.
	www.geocities.com /doctor_uae/nitrogen.htm (8827 words)

	Defra, UK - Environmental Protection - Air Quality - Air Quality Expert Group Reports - Nitrogen Dioxide in the United ...
		Meteorological and chemical processes that affect ambient nitrogen dioxide concentrations.
		Modelling and mapping methods and their coupling with measurements at monitoring sites to predict future concentrations of nitrogen dioxide.
		The later was dealt with in the National Expert Group on Transboundary Air Pollution (NEGTAP) Report on Transboundary Air Pollution: Acidification, Eutrophication and Ground-Level Ozone in the UK, published in 2001.
	www.defra.gov.uk /environment/airquality/aqeg/nitrogen-dioxide (267 words)

	the_nitrogen_group's Xanga Site
		My name is Antimony and I am the fourth element in the Nitrogen group.
		My name is Arsenic and I am the third element in the Nitrogen Group.
		I'm Nitrogen, and I am the first element on the Nitrogen group.
	www.xanga.com /the_nitrogen_group (1052 words)

	US Patent Class 534-- ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES
		.~.~.~.~ Sulfonic acid group formed or added to the azo reactant (-(0=)S(=0)-OH, wherein H of -0H may be replaced by a substituted or unsubstituted ammonium ion or metal)
		.~.~ Plural hydroxy groups or esters thereof bonded directly to a monocyclic benzene ring (H of hydroxy may be replaced by a substituted or unsubstituted ammonium ion or metal)
		.~.~.~.~ Hydroxy and nitrogen, other than as nitro, nitroso or azo, bonded directly to the same bicyclo ring system (H of hydroxy may be replaced by the ammonium ion or a Group IA or IIA light metal)
	www.patentec.com /data/class/534.html (4301 words)

	AIRCO DIV OF BOC GROUP -- NITROGEN - NITROGEN, TECHNICAL
		IT SHOULD BE RECOGNIZED THAT IT IS POSSIBLE THAT NONE OF THE SYMPTOMS MAY OCCUR IN NITROGEN ASPHYXIA SO THAT THERE MAY BE NO DEFINITE WARNING SYMPTOMS.
		Acute Health Hazard-None: X Contact Hazard-Moderate: X Fire Hazard-None: X Reactivity Hazard-None: X Special Hazard Precautions: NITROGEN IS NONTOXIC BUT THE LIBERATION OF A LARGE AMOUNT IN A CONFINED AREA COULD DISPLACE THA AMOUNT OF OXYGEN IN AIR NECESARY TO SUPPORT LIFE.
		IN CASE OF SPILL: EVACUATE ALL PERSONNEL FROM AFFECTED AREA.
	www.conncoll.edu /offices/envhealth/MSDS/physics/nitrogendry.html (605 words)

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