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عرض تقديمي من PowerPoint
عرض تقديمي من PowerPoint

... O 2 - phenyl benzo 4 - pyrones falvones ...
Exam Review
Exam Review

... Petroleum is a complex mixture of hundreds of thousands of compounds. Some of these compounds boil at temperatures as low as 20ºC. The least volatile compounds of crude oil, boil at temperatures above 400ºC. The differences in boiling points of the compounds making up petroleum enable the separation ...
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Chemistry 134 Problem Set Introduction

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Chapter 6: The Periodic Table and Periodic Law
Chapter 6: The Periodic Table and Periodic Law

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The Periodic Table and Periodic Law
The Periodic Table and Periodic Law

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Brilliant Preparatory Section, Sitamarhi

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CSEC Chemistry Revision Guide Answers.indd

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Chem 11 Review Answers - hrsbstaff.ednet.ns.ca
Chem 11 Review Answers - hrsbstaff.ednet.ns.ca

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printer-friendly version
printer-friendly version

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Initial Pages.pmd - Sakshieducation.com
Initial Pages.pmd - Sakshieducation.com

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Honors Chemistry
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Halogen

The halogens or halogen elements (/ˈhælɵdʒɨn/) are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 (ununseptium) may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17.The name 'halogen' means 'salt-producing'. When halogens react with metals they produce a wide range of salts, including calcium fluoride, sodium chloride (common salt), silver bromide and potassium iodide. The group of halogens is the only periodic table group that contains elements in three of the four main states of matter at standard temperature and pressure. All of the halogens form acids when bonded to hydrogen. Most halogens are typically produced from minerals or salts. The middle halogens, that is chlorine, bromine and iodine, are often used as disinfectants. Organobromides are the most important class of flame retardants. Elemental halogens are generally toxic.
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