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halogen    音標拼音: [h'ælədʒən]
n. 鹵素

鹵素

halogen
n 1: any of five related nonmetallic elements (fluorine or
chlorine or bromine or iodine or astatine) that are all
monovalent and readily form negative ions



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  • Halogen - Wikipedia
    Halogen lamps are a type of incandescent lamp using a tungsten filament in bulbs that have small amounts of a halogen, such as iodine or bromine added This enables the production of lamps that are much smaller than non-halogen incandescent lightbulbs at the same wattage
  • Halogen | Elements, Examples, Properties, Uses, Facts | Britannica
    Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts) Learn more about the properties of halogens in this article
  • Halogen Elements - List and Facts
    Learn about the halogen elements See where they are on the periodic table Get the list of halogens and learn about their properties
  • Halogens - Chemistry Learner
    Halogens are located on the right and found in group VIIa (new IUPAC) or group 17 (CAS) of the periodic table Halogens have physical and chemical properties which are typical of non-metal
  • List of Halogens (Element Groups) - ThoughtCo
    The halogens are the elements in group 17 of the periodic table This is the next-to-last column of elements on the righthand side of the table The halogen elements are fluorine, chlorine, bromine, iodine, astatine, and possibly tennessine The halogens are highly reactive nonmetallic elements
  • 8. 13. 1. 2: General Properties of Halogens - Chemistry LibreTexts
    The halogens are located on the left of the noble gases on the periodic table These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At)
  • 18. 11 Occurrence, Preparation, and Properties of Halogens - OpenStax
    In this section, we will examine the occurrence, preparation, and properties of halogens Next, we will examine halogen compounds with the representative metals followed by an examination of the interhalogens This section will conclude with some applications of halogens
  • Halogens: Definition, Properties Uses in Chemistry - Vedantu
    The name 'halogen' originates from Greek words: 'halos' meaning 'salt' and 'genes' meaning 'to produce' They are called salt-producers because they readily react with metals to form a wide range of salts, such as sodium chloride (NaCl) and potassium bromide (KBr)
  • Halogens - Chemistry Encyclopedia - uses, elements, gas, number, name . . .
    The halogens are the family of chemical elements that includes fluorine (atomic symbol F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At) The halogens make up Group VIIA of the Periodic Table of the elements Elemental halogens are diatomic molecules
  • Halogen Elements | Encyclopedia. com
    Halogen comes from Greek terms meaning "produce sea salt " None of the halogens occur naturally in the form of elements, but, except for astatine, they are very widespread and abundant in chemical compounds where they are combined with other elements





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