Video: Puas yuav fluorine tsim cov ntawv cog lus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nrog rau lwm cov atoms, fluorine cov ntaub ntawv los yog polarcovalent daim ntawv cog lus los yog ionic daim ntawv cog lus . Feem ntau, covalent daim ntawv cog lus koom nrog tshuaj fluorine atoms yog ib leeg daim ntawv cog lus , txawm tias tsawg kawg yog ob qho piv txwv ntawm kev txiav txim siab dua daim ntawv cog lus muaj. Fluoride tuaj yeem ua raws li kev sib txuas ntawm ligand nruab nrab ntawm ob cov hlau hauv qee cov molecules complex.
Ua li no, hom kev sib cog lus twg yog tsim los ntawm fluorine thiab fluorine?
Cov hom ntawv cog lus uas feem ntau yuav yog tsim ntawm ob tshuaj fluorine atoms yog nonpolarcovalent daim ntawv cog lus . Hluav taws xob nruab nrab ob tug tshuaj fluorine atoms sib koom nruab nrab lawv.
Ib tug kuj nug, fluorine puas tuaj yeem tsim ob daim ntawv cog lus? Fluorine muaj xya valence electrons thiab mob tsuas yog ib qho hluav taws xob los ua kom tiav nws cov octet. Yog li ntawd, fluorine cov ntaub ntawv ib leeg xwb daim ntawv cog lus nyob rau hauv zoo tag nrho ntawm nws covalent compounds. Txawm li cas los xij, tshuaj fluorine tej zaum yuav nthuav tawm qee qhov ob daim ntawv cog lus tus cwj pwm nyob rau hauv cov tebchaw xws li BF3 thiab nyob rau hauv lub xeev zoo siab ntawm ib co lwm yam molecules.
Ib sab saum toj no, pes tsawg daim ntawv cog lus tuaj yeem tsim tau fluorine?
Nws muaj 9 electrons, 2 core thiab 7 valence. Ntau dua kev ua 7 daim ntawv cog lus , tshuaj fluorine nkaus xwb daim ntawv ib tug singlebond rau qhov pib tib yam yog vim li cas oxygen xwb daim ntawv ob daim ntawv cog lus . Hydrogen fluoride, HF, muaj ib daim ntawv cog lus, tab sis plaub qhov chaw ntawm electron ceev nyob ib ncig ntawm tshuaj fluorine.
Puas muaj fluorine puas tuaj yeem tsim ib daim ntawv cog lus nonpolar?
(a) Fluorine tuaj yeem ua ionic daim ntawv cog lus (xws li NaF), nonpolar covalent bonds (xws li hauv F2), thiab polar covalent bonds (xws li hauv HF). Fluorine thiab lwm cov atoms hauv peb daim ntawv cog lus hom txhua yam muaj qhov ruaj khov ntawm cov electrons. Fluorine yog ib txwm qhov zoo kawg ntawm lub daim ntawv cog lus.
Pom zoo:
Yuav ua li cas yog daim ntawv cog lus sib txawv ntawm daim ntawv cog lus ionic?
Qhov sib txawv ntawm cov ionic thiab covalent daim ntawv cog lus yog tias covalent daim ntawv cog lus yog tsim thaum ob lub atoms sib koom electrons. Ionic bonds yog lub zog uas tuav ua ke electrostatic zog ntawm kev nyiam ntawm cov ions oppositely them. Ionic bonds muaj qhov sib txawv electronegativity ntau dua lossis sib npaug li 2
Dab tsi yog qhov txawv ntawm daim ntawv cog lus lub zog thiab daim ntawv cog lus dissociation zog?
Qhov sib txawv tseem ceeb ntawm kev sib txuas ntawm lub zog thiab lub zog bonddissociation yog tias lub zog sib txuas yog qhov nruab nrab ntawm lub zog xav tau los rhuav tshem tag nrho cov kev sib txuas ntawm tib ob hom atoms nyob rau hauv ib qho chaw sib txuas whereas daim ntawv cog lus dissociation zog yog tus nqi ntawm cov hluav taws xob xav tau los rhuav tshem ib qho kev sib koom ua ke inhomolysis
Puas yog daim ntawv cog lus hydrogen zoo ib yam li daim ntawv cog lus?
Hydrogen daim ntawv cog lus yog lub npe muab rau electrostatic kev sib cuam tshuam ntawm tus nqi zoo ntawm hydrogen atom thiab tus nqi tsis zoo ntawm oxygen atom ntawm ib qho chaw nyob sib ze. Covalent daim ntawv cog lus yog qhov sib cuam tshuam electrostatic ntawm ob lub atom hauv tib lub molecule
Hom kev sib cog lus twg yuav tsim ntawm fluorine thiab fluorine?
Electronegativity yog qhov txheeb ze. Thaum fluorine reacts nrog hlau, nws oxidizes hlau, thiab tsim ib daim ntawv cog lus ionic. Txawm li cas los xij, thaum ob lub fluorine atoms hnov mob los tsim cov fluorinemolecule, ib daim ntawv cog lus ntshiab yog tsim
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm