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Group of chemical elements
The halogens (/ˈhælədʒən, ˈheɪ-, -loʊ-, -ˌdʒɛn/) are a group in the periodic table consisting of six chemically related elements: fluorine (F), chlorine
Halogen
Incandescent lamp variety
A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed
Halogen_lamp
Cooking pot that uses halogen bulbs
A halogen oven, halogen convection oven, or halogen cooking pot is a type of oven that utilizes a halogen lamp as its heating element. Because a fan is
Halogen_oven
Topics referred to by the same term
Look up halogen in Wiktionary, the free dictionary. The halogens are a series of chemical elements. Halogen may also refer to: Halogen (album), by Whitehouse
Halogen_(disambiguation)
Net attractive interaction involving one of the halogen elements
a halogen bond (XB or HaB) occurs when there is evidence of a net attractive interaction between an electrophilic region associated with a halogen atom
Halogen_bond
Group of chemical compounds derived from alkanes containing one or more halogens
as halogenoalkanes or alkyl halides) are alkanes containing one or more halogen substituents of hydrogen . They are a subset of the general class of halocarbons
Haloalkane
Material classification for cable jacketing
Low smoke zero halogen or low smoke free of halogen (LSZH or LSOH or LS0H or LSFH or OHLS or ZHFR) is a material classification typically used for cable
Low_smoke_zero_halogen
Chemical compound composed of a halogen atom and some other element
part is a halogen atom and the other part is an element or radical that is less electronegative (or more electropositive) than the halogen, to make a
Halide
The Carius halogen method in analytical chemistry is a method for the quantitative determination of halogens in organic compounds, invented by the German
Carius_halogen_method
Australian rock band
Halogen were an Australian rock band, formed in Perth, Western Australia in 1997. Founding mainstays were Frans Bisschops on guitar and keyboards and
Halogen_(band)
Chemical reaction
In organometallic chemistry, metal–halogen exchange is a fundamental reaction that converts an organic halide into an organometallic product. The reaction
Metal–halogen_exchange
1994 studio album by Whitehouse
Halogen CD is the thirteenth studio album by power electronics band Whitehouse, released in April 1994 through their Susan Lawly label. The album's cover
Halogen_(album)
Chemical reaction
The halogen dance rearrangement, also known as halogen scrambling, halogen migration, or halogen isomerization, is the migration of halogen substituents
Halogen_dance_rearrangement
Canadian software company
Halogen Software was a Canadian company that provided cloud-based talent management solutions to customers with between 100 and 10,000 employees. The
Halogen_Software
Nigerian security company
Halogen Group Nigeria formally known as Halogen Security Company is the first indigenous private security company in Nigeria founded by Biodun Shobanjo
Halogen_Group_Nigeria
American TV channel
Halogen TV was an American digital cable and satellite television channel that aired feature-length films, documentaries, short films, and original reality
Halogen_TV
Lamp mounted in the front of a vehicle
could not be achieved without a move to halogen technology, and so sealed-beam headlamps with internal halogen lamps became available for use on 1979 models
Headlamp
Dental equipment
curing light sources: tungsten halogen, light-emitting diodes (LED), plasma arcs, and lasers. The two most common are halogen and LEDs. In the early 1960s
Dental_curing_light
Chemical element with atomic number 53 (I)
element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid
Iodine
Type of lamp/lightbulb fitting/connector
safety". They are used on many small incandescent light bulbs (especially halogen lamps), and for starters on some types of fluorescent lights. Some sockets
Bi-pin_lamp_base
Chemical element with atomic number 35 (Br)
halide salts analogous to table salt, a property it shares with the other halogens. While it is rather rare in the Earth's crust, the high solubility of the
Bromine
Molecule containing only halogen elements of two or more kinds
interhalogen compound is a molecule which contains two or more different halogen atoms (fluorine, chlorine, bromine, iodine, or astatine) and no atoms of
Interhalogen
Lamp with a tall stand made of wood or metal
halogen, or LED light bulbs. Adjusting the pulse-width modulation in the electronic ballast can allow the fluorescent torchères to be dimmed. Halogen
Torchère
Electric light bulb with a resistively heated wire filament
thermal conductivity is exploited here. Halogen, a small amount mixed with inert gas which is used in halogen lamps, a distinct type of incandescent lamp
Incandescent_light_bulb
Chemical reaction which adds one or more halogen elements to a compound
chemistry, halogenation is a chemical reaction which introduces one or more halogens into a chemical compound. Halide-containing compounds are pervasive, making
Halogenation
Chemical element with atomic number 17 (Cl)
element; it has symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its
Chlorine
Halogen Foundation (Singapore) is an Institute of Public Character and not-for-profit organization in Singapore whose mission is to inspire and influence
Halogen_Foundation
Reaction which adds a halogen molecule
A halogen addition reaction is a simple organic reaction where a halogen molecule is added to the carbon–carbon double bond of an alkene functional group
Halogen_addition_reaction
Device for producing light from electricity
19 August 2022. "Tungsten Halogen – Double Jacket". LampTech.co.uk. Retrieved 6 March 2023. "Should you not touch halogen capsule bulbs with your fingers
Electric_light
anions containing halogens only. The ions can be classified into two classes, isopolyhalogen ions which contain one type of halogen only, and heteropolyhalogen
Polyhalogen_ions
Tube used to protect and route electrical wiring in a building or structure
"What is LSZH Conduit". ledestube.com. UL Solutions. "Halogen Free (HF) and Low Smoke Halogen Free (LSHF) Cable Certification". ul.com. UL, Solutions
Electrical_conduit
Methane (CH4) derivative with 3 halogen substituents
hydrogen atoms of methane (CH4) are replaced by halogen atoms. Trihalomethanes with all the same halogen atoms are called haloforms. Many trihalomethanes
Trihalomethane
Any onium ion containing a halogen atom carrying a positive charge
onium ion containing a halogen atom carrying a positive charge. This cation has the general structure R−+X−R′ where X is any halogen and no restrictions
Halonium_ion
Organic reaction: addition of a halogen to the alpha carbon of a ketone
basic conditions in an aqueous medium with the corresponding elemental halogen. In this way, chloride, bromide, and iodide (but notably not fluoride)
Ketone_halogenation
Class of chemical compounds
one or more halogen atoms take the place of hydrogen atoms in the methyl group of acetic acid. In a monohaloacetic acid, a single halogen replaces a hydrogen
Haloacetic_acids
Set of adjacent groups
ionic compounds with nonmetals, especially with the highly electronegative halogen nonmetals. The p-block, with the p standing for "principal" and azimuthal
Block_(periodic_table)
Chemical compound containing carbon and at least one halogen
one or more carbon atoms are linked by covalent bonds with one or more halogen atoms (fluorine, chlorine, bromine, iodine, or astatine – group 17) resulting
Halocarbon
Light bulb
reflector (often abbreviated MR) light bulb is a reflector housing format for halogen and LED lamps. MR lamps were originally designed for use in slide projectors
Multifaceted_reflector
Type of electric lamp
service, sealed beams have since been applied elsewhere. Halogen sealed beam lamps incorporate a halogen lamp within a quartz or hard glass envelope. A PAR
Parabolic aluminized reflector
Parabolic_aluminized_reflector
Functional group in organic chemistry
consisting of a ketone group or more generally a carbonyl group with an α-halogen substituent. α-Halo ketones are alkylating agents. Prominent α-halo ketones
Α-Halo_ketone
Substance applied to items to slow burning or delay ignition
important class of flame retardants, compounds contain both phosphorus and a halogen. Such compounds include tris(2,3-dibromopropyl) phosphate (brominated tris)
Flame_retardant
Non metallic elements
such as silicon, chlorine, and helium are classed as either metalloids, halogens, or noble gases, the remaining unclassified nonmetallic elements are hydrogen
List of alternative nonmetal classes
List_of_alternative_nonmetal_classes
Minerals with a dominant fluoride, chloride, bromide, or iodide anion
Halide minerals are those minerals with a dominant halide anion (F−, Cl−, Br− and I−). Complex halide minerals may also have polyatomic anions. Examples
Halide_mineral
Chemical compound used to oxidize another substance in a chemical reaction
oxidized". Common oxidizing agents are oxygen, hydrogen peroxide, and the halogens. In one sense, an oxidizing agent is a chemical species that undergoes
Oxidizing_agent
Aromatic compounds containing Halogen atom(s) in place of Hydrogen
more hydrogen atoms directly bonded to an aromatic ring are replaced by a halogen atom (such as fluorine, chlorine, bromine, or iodine). Aryl halides are
Aryl_halide
Chemistry
(substitution nucleophilic bimolecular reaction) that involves the exchange of one halogen atom for another. It is an equilibrium reaction, but the reaction can be
Finkelstein_reaction
Italian chemist
also has an interest in crystal engineering, in particular by using the halogen bond. He is past-president of the Physical and Biophysical Chemistry Division
Pierangelo_Metrangolo
Type of functional group in a molecule
(also a haloalcohol or β-halo alcohol) is a functional group in which a halogen and a hydroxyl are bonded to adjacent carbon atoms, which otherwise bear
Halohydrin
Regulations banning sale of incandescent light bulbs
differences of color matching when compared to incandescent light or daylight. Halogen lamps are a type of incandescent lamp with improved efficiency over regular
Incandescent_light_bulb_ban
Medical condition
Halogen acne is caused by iodides, bromides and fluorides (halogens) that induce an acneiform eruption similar to that observed with steroids. Halogenoderma
Halogen_acne
Chemical compound
Bromochlorofluoroiodomethane is a hypothetical haloalkane with all four stable halogen substituents present in it. This compound can be seen as a methane molecule
Bromochlorofluoroiodomethane
Net attractive interaction involving one of the chalcogen elements
attractive interaction in the family of σ-hole interactions, along with halogen bonds. Electrostatic, charge-transfer (CT) and dispersion terms have been
Chalcogen_bond
How efficiently a source produces visible light
"Osram halogen" (PDF). osram.de (in German). Archived from the original (PDF) on November 7, 2007. Retrieved 2008-01-28. "Osram 6406330 Miniwatt-Halogen 5
Luminous_efficacy
Chemical element with atomic number 51 (Sb)
in lead–acid batteries. Antimony trioxide is a prominent additive for halogen-containing flame retardants. Antimony is used as a dopant in semiconductor
Antimony
Compounds with similar properties to polyatomic halogens
polyatomic analogues of halogens, whose chemistry, resembling that of the true halogens, allows them to substitute for halogens in several classes of chemical
Pseudohalogen
SI derived unit of visible light emission
Lumen?". Lightbulbs Direct. 24 January 2025. Retrieved 24 January 2024. "Halogen lamps". Westinghouse. Retrieved 10 March 2020. Philips Luxeon CoB emitters
Lumen_(unit)
Unshielded twisted pair communications cable
Outer insulation is typically polyvinyl chloride (PVC) or low smoke zero halogen (LS0H).[citation needed] Most Category 5 cables can be bent at any radius
Category_5_cable
Hydrocarbon compound (CH4) in natural gas
conditions, methane reacts with halogen radicals as follows: •X + CH4 → HX + •CH3 •CH3 + X2 → CH3X + •X where X is a halogen: fluorine (F), chlorine (Cl)
Methane
Portable hand-held electric light
xenon. Some high-power incandescent flashlights use a halogen lamp where the bulb contains a halogen gas such as iodine or bromine to improve the life and
Flashlight
Type of chemical reaction
anion; or A {\displaystyle {\ce {A}}} and B {\displaystyle {\ce {B}}} are halogens and C {\displaystyle {\ce {C}}} is a cation. This will most often occur
Single_displacement_reaction
Ultraviolet source based on spontaneous emission of excimer molecules
are referred to exciplex molecules. Dimers of rare gases and rare-gas–halogen dimers are the most spread and studied excimers. Rare-gas–halide trimers
Excimer_lamp
Chemical bond which does not involve the sharing of electrons
to the dipole–dipole interaction known as hydrogen bonding. In halogen bonding, a halogen atom acts as an electrophile, or electron-seeking species, and
Non-covalent_interaction
Class of chemical compounds
acid is an oxyacid consisting of a hydroxyl group single-bonded to any halogen. Examples include hypofluorous acid, hypochlorous acid, hypobromous acid
Hypohalous_acid
Minerals containing the carbonate ion
Carbonate minerals are those minerals containing the carbonate ion, CO2− 3. Calcite group: trigonal Calcite CaCO3 Gaspéite (Ni,Mg,Fe2+)CO3 Magnesite MgCO3
Carbonate_mineral
Chemical compound
part of the haloforms, a class of compounds with the formula CHX3 (X = halogen) with C3v symmetry. Fluoroform is used in diverse applications in organic
Fluoroform
organic compounds in which two hydrogen atoms in methane are replaced by halogen atoms. They belong to the haloalkanes, specifically the subgroup of halomethanes
Dihalomethane
Stick with a flaming end used as a source of light
efficacy Task lighting Methods of generation Incandescent Regular Edison Halogen Nernst Luminescent Cathodoluminescent Electron-stimulated Chemiluminescent
Torch
Intermolecular forces between oppositely-charged sites on molecules
Peter (2013-11-01). "Halogen bond tunability II: the varying roles of electrostatic and dispersion contributions to attraction in halogen bonds". Journal of
Sigma_hole_interactions
Electron in the outer shell of an atom's energy levels
nonmetal after fluorine, even though it is not a halogen, because the valence shells of the heavier halogens are at higher principal quantum numbers. In these
Valence_electron
Chemical compound
chlorides and fluorides: C4H9Li + RX → C4H9X + RLi (X = Br, I) This lithium–halogen exchange reaction is useful for preparation of several types of RLi compounds
N-Butyllithium
Electrophilic addition of hydrogen halides to alkenes
the double bond are linked to a different number of hydrogen atoms, the halogen is found preferentially at the carbon with fewer hydrogen substituents
Hydrohalogenation
Automotive light bulb
The H1 is a halogen lamp designed for use in automotive headlamps and fog and driving lamps. It has also been widely applied in emergency vehicle lights
H1_lamp
Part of a Geiger counter
halogen-filled G–M tube was invented by Sidney H. Liebson in 1947 and has several advantages over the older tubes with organic mixtures. The halogen tube
Geiger–Müller_tube
Acetylene-burning lamps
efficacy Task lighting Methods of generation Incandescent Regular Edison Halogen Nernst Luminescent Cathodoluminescent Electron-stimulated Chemiluminescent
Carbide_lamp
Artistic light bulb manufacturer
efficacy Task lighting Methods of generation Incandescent Regular Edison Halogen Nernst Luminescent Cathodoluminescent Electron-stimulated Chemiluminescent
Aerolux_Light_Corporation
American actor (born 1978)
2019. In August 2023, they jointly filed for divorce. Tone Control (2004) Halogen Moon (2012) Broken Bottles (2012) Zuckerman, Faye (June 9, 2000). "Television
Nate_Richert
Organometallic compounds used in organic synthesis
"Preparation of t-Butyl-3-Bromo-5-Formylbenzoate Through Selective Metal-Halogen Exchange Reactions". Organic Syntheses. 89: 460. doi:10.15227/orgsyn.089
Grignard_reagent
Craft of lighting at performances
preferred) are tungsten-halogen (or quartz-halogen), an improvement on the original incandescent design that uses a halogen gas instead of an inert gas
Stage_lighting
Device producing regular flashes of light
break.[citation needed] Gas strobe beacons include Xenon flash lamp and halogen varieties. Gas strobe beacons consist of a gas-filled tube surrounded by
Strobe_light
(B-Bu)2(por), reacted with alcohols to give (B-OR)2(por), or even undergo halogen abstraction via weakly-coordinating anions to give [(B-B)(por)]2+. One
Boron_porphyrins
oxides play a key role in recycling active free radicals (such as reactive halogens) in the atmosphere and indirectly affect ozone depletion. Ozone depletion
Tropospheric ozone depletion events
Tropospheric_ozone_depletion_events
Molecule
A cyanogen halide is a molecule consisting of cyanide and a halogen. Cyanogen halides are chemically classified as pseudohalogens. The cyanogen halides
Cyanogen_halide
Chemical compound
the halogen (+1) atom in other hypohalic acids. This alters the acid's chemistry. Where reduction of a general hypohalous acid reduces the halogen atom
Hypofluorous_acid
Chemical compound
doi:10.1021/jp073512+ Theoretical investigation of halogen-oxygen bonding and its implications in halogen chemistry and reactivity. Bioinorganic Chemistry
Bromic_acid
Mineral classification
16a. Carbonate containing hydroxyl anion or halogen 16b. Carbonate containing hydroxyl anion or halogen 17. Compound carbonates 18. Simple nitrate 19
Dana_classification_system
Decorative lamp
cannabis cultures. A classic lava lamp contains a standard incandescent or halogen lamp which heats a tall (often tapered) glass bottle. A formula from a
Lava_lamp
Electric light that produces light using LEDs
replacing fluorescent troffers or LED spotlight fixtures replacing similar halogen fixtures) or bulbs (such as LED tubes replacing fluorescent tubes inside
LED_lamp
Chemical compound
expected, but there has been no study done to confirm this. Due to the halogen in the 2 position not being a chlorine but a fluorine, the molecule is
2-Fluorodeschloroketamine
Named reaction for synthesis of organic halides
organic chemistry whereby silver salts of carboxylic acids react with a halogen to produce an organic halide. It is an example of both a decarboxylation
Hunsdiecker_reaction
Motorcycle model
Electrical system 12 volt - DC Battery 12 volt, 8 Ah Head lamp 12V, H4-60/55W (halogen) Tail lamp 12V, P21/5W Turn signal lamp 12V, R10W X 4nos First Generation
Royal_Enfield_Classic
Italian chemist
chemistry. He has a particular focus on self-assembly processes driven by halogen bonds, chalcogen bonds, and pnictogen bonds. His results on the attractive
Giuseppe_Resnati
Light source using an electric arc through mercury vapor
external ballast. These lamps are about as efficient as incandescent and halogen lamps, but have the added benefit of longer lifespans. They give light
Mercury-vapor_lamp
Test used in elemental analysis
qualitative determination of the presence of foreign elements, namely halogens, nitrogen, and sulfur, in an organic compound. It was developed by J. L
Sodium_fusion_test
Solid consisting of discrete molecules
interactions, quadrupole interactions, π–π interactions, hydrogen bonding, halogen bonding, London dispersion forces, and in some molecular solids, coulombic
Molecular_solid
Chemical compound
900') solutions. Experts warn that ammonia solutions not be mixed with halogens, as toxic and/or explosive products are formed. Experts also warn that
Ammonia
Type of lamp
chlorides of different metals. Iodine, bromine and chlorine are of the halogen group of the periodic table, and so are termed "halides" when ionized.
Metal-halide_lamp
American multinational technology company
January 2012, Apple requested that its cable maker, Volex, begin producing halogen-free USB and power cables. In February 2016, Apple issued a US$1.5-billion
Apple_Inc.
Model
has much more detail. Halogen lamp#Effect of voltage on performance, for halogen lamps. Welch Allyn (2007). "Miniature halogen lamps; lamp electrical
Lamp_rerating
Electric lighting using rarefied gas
efficacy Task lighting Methods of generation Incandescent Regular Edison Halogen Nernst Luminescent Cathodoluminescent Electron-stimulated Chemiluminescent
Neon_lighting
Lamp that produces light by an electric arc
efficacy Task lighting Methods of generation Incandescent Regular Edison Halogen Nernst Luminescent Cathodoluminescent Electron-stimulated Chemiluminescent
Arc_lamp
HALOGEN
HALOGEN
HALOGEN
HALOGEN
Female
Dutch
, firm spear.
Girl/Female
Arabic, Muslim
Mighty
Girl/Female
Arabic, Muslim
Kind; Compassionate
Boy/Male
Hindu, Indian
God
Female
Egyptian
, mother of Aahmes and Bak.
Girl/Female
Tamil
Girl/Female
Arabic
Moral
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Desire
Boy/Male
English American
Camp of the soldiers.
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Telugu, Traditional
The Abode of Hari
HALOGEN
HALOGEN
HALOGEN
HALOGEN
HALOGEN
n.
A nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.
n.
A halogen.
n.
A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. If set free it immediately attacks the containing material, so that it was not isolated until 1886. It is a pungent, corrosive, colorless gas. Symbol F. Atomic weight 19.
a.
Of the nature of a halogen.
n.
A colorless, inflammable, poisonous gas, C2N2, with a peach-blossom odor, so called from its tendency to form blue compounds; obtained by heating ammonium oxalate, mercuric cyanide, etc. It is obtained in combination, forming an alkaline cyanide when nitrogen or a nitrogenous compound is strongly ignited with carbon and soda or potash. It conducts itself like a member of the halogen group of elements, and shows a tendency to form complex compounds. The name is also applied to the univalent radical, CN (the half molecule of cyanogen proper), which was one of the first compound radicals recognized.
n.
An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine.