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Group of chemical elements
The halogens are a group in the periodic table consisting of six chemically related elements, fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and
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)
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
Chemical reaction
The halogen dance rearrangement is an organic reaction in which a halogen substituent moves to a new position on an aromatic ring system. It was discovered
Halogen_dance_rearrangement
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
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
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
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
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)
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
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)
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
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
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
American YouTuber and filmmaker (born 2005)
Kane Parsons (born June 18, 2005), also known as Kane Pixels, is an American YouTuber, composer, filmmaker, and visual effects artist. In January 2022
Kane_Parsons
Singaporean non-profit
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
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
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
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
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
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
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
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
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
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
Chemical compound
doi:10.1021/jp073512+ Theoretical investigation of halogen-oxygen bonding and its implications in halogen chemistry and reactivity. Bioinorganic Chemistry
Bromic_acid
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
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
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
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
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 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
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
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
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
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
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
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
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
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
Range of mid-size cars produced by Volvo from 1974 to 1993
sealed beams (high beams halogen) 1983–1984 Quad rectangular 165 mm × 100 mm halogen sealed beams Quad rectangular 165 mm × 100 mm halogen sealed beams N/A Quad
Volvo_200_Series
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
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
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
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
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
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
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
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
Chemical compound
dichlorofluoromethane to form bromodichlorofluoromethane, followed by halogen exchange with sodium iodide in acetone; or by reacting
Dichlorofluoroiodomethane
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)
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
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
Fluorescent lamps with folded tubes, often with built-in ballast
lighting. Hybrid lamps, combining a halogen lamp with a CFL, are available where warm up time is unacceptable. The halogen lamp lights immediately, and is
Compact_fluorescent_lamp
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
Soil or water measurement
Adsorbable organic halides (AOX) is a measure of the organic halogen load at a sampling site such as soil from a land fill, water, or sewage waste. The
Adsorbable_organic_halides
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
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
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
(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
Chemical element with atomic number 85 (At)
heavier analog of fluorine, chlorine, bromine, and iodine, the four stable halogens. However, astatine also falls roughly along the dividing line between metals
Astatine
Chemical compounds with oxygen and a halogen bonded to the same atom
group of chemical compounds with the chemical formula AmOnXp, where X is a halogen, and A is an element different from O and X. Oxohalides are numerous. Molecular
Oxohalide
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
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
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
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
Chemical compounds containing selenium
Selenium compounds are compounds containing the element selenium (Se). Among these compounds, selenium has various oxidation states, the most common ones
Selenium_compounds
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
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
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
Device designed to create radiative heat
radiant heating. Halogen lamps are incandescent lamps filled with highly pressurized inert gas combined with a small amount of halogen gas (bromine or
Infrared_heater
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
Portable lighting device
efficacy Task lighting Methods of generation Incandescent Regular Edison Halogen Nernst Luminescent Cathodoluminescent Electron-stimulated Chemiluminescent
Lantern
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
Compound of gold with a halogen
Gold halides are compounds of gold with the halogens. AuCl, AuBr, and AuI are all crystalline solids with a structure containing alternating linear chains:
Gold_halide
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
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
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
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
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
Class of enzymes
monooxygenase is a flavoprotein. The enzyme acts only on phenols with halogens in the position next to the hydroxy group on the benzene ring, the 2-position
Pentachlorophenol monooxygenase
Pentachlorophenol_monooxygenase
Compact sedan
variable transmission (CVT). The Lite variant features 16-inch alloy wheels, halogen headlamps, fabric upholstery and a simplified equipment list, while retaining
Proton_S70
Chemical compound
Phenylsodium C6H5Na is an organosodium compound. Solid phenylsodium was first isolated by Nef in 1903. Although the behavior of phenylsodium and phenyl
Phenylsodium
American venture capitalist and TV host
talk show in Northern California and Seattle. In 2015, Draper founded Halogen Ventures to invest in female-founded companies. She has invested in 70
Jesse_Draper
Illumination devices attached to bicycles
almost universal, rechargeable halogen lights became popular with commuter cyclists. The lights used by most halogen rechargeable systems were cheap
Bicycle_lighting
Category of chemical elements
called "nonmetal halogens": Chambers & Holliday 1982, pp. 273–274; Bohlmann 1992, p. 213; Jentzsch & Matile 2015, p. 247 or "stable halogens": Vassilakis
Nonmetal
Chemical group made of an –S(=O)2 group bound to a halogen
sulfonyl (>S(=O)2) group singly bonded to a halogen atom. They have the general formula RSO2X, where X is a halogen. The stability of sulfonyl halides decreases
Sulfonyl_halide
Template placed in front of a light source to shape the emitted light
color and glass does not suffice. However, in a "traditional" (tungsten-halogen) light fixture, the focus point position of a gobo is extremely hot, so
Gobo_(lighting)
Group of chemical compounds
are a group of chemical compounds that contain only carbon, oxygen and halogen atoms: fluorine, chlorine, bromine and iodine. They include carbonyl halides
Carbon_oxohalide
catalyzed cross-coupling reactions. The C-I bond is the weakest of the halogens: the bond dissociation energy of C-I is 57.6 kcal/mol, while fluoride,
Vinyl_iodide_functional_group
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
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
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)
Topics referred to by the same term
number following 34 and preceding 36 35 BC AD 35 1935 2035 Bromine, a halogen in the periodic table 35 Leukothea, an asteroid in the asteroid belt HP-35
35
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
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
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