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Bromine
Bromine is a chemical element upright=1.0, 500px, The chemical elements ordered by link=Periodic table In chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, eleme ... with the symbol Br and atomic number 300px, The Rutherford–Bohr model of the hydrogen atom () or a hydrogen-like ion (). In this model it is an essential feature that the photon energy (or frequency) of the electromagnetic radiation emitted (shown) when an electron jumps from one ... 35. It is the third-lightest halogen The halogens () are a group A group is a number A number is a mathematical object used to counting, count, measurement, measure, and nominal number, label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can b ..., and is a fuming red-brown liquid A liquid is a nearly incompressible In fluid mechanics or more generally continuum mec ...
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Organobromine Compound
Organobromine compounds, also called organobromides, are organic compound , CH4; is among the simplest organic compounds. In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen chemical bond, bonds. Due to carbon's ability to Catenation, catenate (form chains with other carbon ...s that contain carbon Carbon (from la, carbo "coal") is a chemical element Image:Simple Periodic Table Chart-blocks.svg, 400px, Periodic table, The periodic table of the chemical elements In chemistry, an element is a pure substance consisting only of atoms ... bonded to bromine Bromine is a chemical element Image:Simple Periodic Table Chart-blocks.svg, 400px, Periodic table, The periodic table of the chemical elements In chemistry, an element is a pure substance consisting only of atoms that all have the same numb .... The most pervasive is the naturally produced bromomethane Bromomethane, commonly known as methyl bromide, is an organobro ...
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Halogen
The halogens () are a group A group is a number A number is a mathematical object used to counting, count, measurement, measure, and nominal number, label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with ... in the periodic table The periodic table, also known as the periodic table of elements, is a tabular display of the chemical element Image:Simple Periodic Table Chart-blocks.svg, 400px, Periodic table, The periodic table of the chemical elements In chemistry ... consisting of five or six chemically related elements: fluorine Fluorine is a chemical element with the Chemical symbol, symbol F and atomic number 9. It is the lightest halogen and exists at Standard conditions for temperature and pressure, standard conditions as a highly toxic, pale yellow Diatomic molecule, ... (F), chlorine Chlorine is a chemical element with the Symbol (chemistry), symbol Cl and atomic number 17. The ...
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Chlorine
Chlorine is a chemical element Image:Simple Periodic Table Chart-blocks.svg, 400px, Periodic table, The periodic table of the chemical elements In chemistry, an element is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nu ... with the symbol A symbol is a mark, sign, or word In linguistics, a word of a spoken language can be defined as the smallest sequence of phonemes that can be uttered in isolation with semantic, objective or pragmatics, practical meaning (linguistics), meanin ... Cl and atomic number 300px, The Rutherford–Bohr model of the hydrogen atom () or a hydrogen-like ion (). In this model it is an essential feature that the photon energy (or frequency) of the electromagnetic radiation emitted (shown) when an electron jumps from one ... 17. The second-lightest of the halogen The halogens () are a group in the periodic table consisting of five chemically related elements: fluorine Fluori ...
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Iodine
Iodine is a with the I and 53. The heaviest of the stable s, it exists as a semi-lustrous, non-metallic solid at s that melts to form a deep violet liquid at 114 degrees , and boils to a violet gas at 184 degrees Celsius. The element was discovered by the French chemist in 1811, and was named two years later by , after the ''Ιώδης'' "violet-coloured". Iodine occurs in many oxidation states, including (I−), (), and the various anions. It is the least abundant of the stable s, being the sixty-first most abundant element. It is the heaviest essential . Iodine is essential in the synthesis of s. affects about two billion people and is the leading preventable cause of . The dominant producers of iodine today are and . Iodine and its are primarily used in . Due to its high atomic number and ease of attachment to s, it has also found favour as a non-toxic material. Because of the specificity of its uptake by the human body, radioactive isotopes of iodine can also ...
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Ozone Depletion
Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth, Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ''ozone hole''. There are also springtime polar tropospheric ozone depletion events in addition to these stratospheric events. The main causes of ozone depletion and the ozone hole are manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam-blowing agents (chlorofluorocarbons (CFCs), HCFCs, Haloalkanes, halons), referred to as ozone-depleting substances (ODS). These compounds are transported into the stratosphere by Turbulence, turbulent mixing after being emitted from the surface, mixing much faster than the molecules can settle. Once in the stratosphere, they release atoms from the halogen group through pho ...
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Carl Jacob Löwig
Carl Jacob Löwig (17 March 1803 – 27 March 1890) was a German chemist and discovered bromine Bromine is a chemical element upright=1.0, 500px, The chemical elements ordered by link=Periodic table In chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that ... independently of Antoine Jérôme Balard. He received his PhD at the University of Heidelberg } Heidelberg University, officially the Ruprecht Karl University of Heidelberg, (german: Ruprecht-Karls-Universität Heidelberg; la, Universitas Ruperto Carola Heidelbergensis) is a public university, public research university in Heidelberg, Ba ... for his work with Leopold Gmelin Leopold Gmelin (2 August 1788 – 13 April 1853) was a German chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin Medieval Latin was the form of Latin Latin (, or , ) is a classical language .... During hi ...
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