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Video: Dab tsi ntawm daim ntawv cog lus ua crystals?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ionic Bonds
Thaum twg ionic crystals yog tsim, electrons jumpthe lawv orbits rau daim ntawv cog lus nrog cov coj atom. Theresultant ua ke ntawm qhov tsis zoo los yog zoo chargedelectrostatic rog stabilizes ions.
Ib yam li ntawd, tib neeg nug, ua covalent bonds tsim muaju?
Covalent Network Solids Qhov kev sib koom no ua rau muaj kev sib npaug ruaj khov ntawm kev ntxim nyiam thiab kev tsis txaus siab ntawm cov atoms. Covalent solidsare ib chav kawm ntawm ncua-lattice tshuaj sib xyaw nyob rau hauv uas txhua atomis covalently bonded rau nws cov neeg nyob ze. Qhov no txhais tau tias tag nrho siv lead ua yog, nyob rau hauv qhov tseeb, ib tug giantmolecule.
Ib yam li ntawd, hom ntawv cog lus twg muaj tungsten? Tungsten Compounds Cov daim ntawv cog lus nyob rau hauv cov tebchaw yog covalent, txhais tau hais tias electrons sib koom ntawm atoms. Nws oxidationstate - tus nqi nws yuav muaj yog tias tag nrho daim ntawv cog lus Nws tsim tau ionic kiag li - hauv cov tebchaw no tuaj yeem nyob ntawm -2 txog +6.
Yog li, koj txiav txim siab hom Bond li cas?
Muaj ob peb txoj kev sib txawv txiav txim ifa ua daim ntawv cog lus yog ionic lossis covalent. Los ntawm kev txhais, ib qho ionic daim ntawv cog lus yog nruab nrab ntawm ib tug hlau thiab ib tug nonmetal, thiab ib tug covalent daim ntawv cog lus yog nruab nrab ntawm 2 nonmetals. Yog li koj feem ntau tsuas yog saib lub rooj zaum thiab txiav txim seb koj cov khoom puas yog ua los ntawm cov hlau / nonmetal lossis tsuas yog 2 nonmetals.
Hom kev sib txuas dab tsi muaj nyob hauv sodium chloride crystals?
Sodium Chloride , NaCl . Qhov classic case ofionic kev sib raug zoo , cov sodium chloride Cov ntaub ntawv molecule los ntawm ionization ntawm sodium thiab tshuaj chlorine atoms thiab theattraction ntawm cov ions tshwm sim. Ib atom ntawm sodium muaj ib tug 3s electron sab nraum lub plhaub kaw, thiab nws tsuas siv 5.14 electronvolts ntawm lub zog kom tshem tawm cov electron.
Pom zoo:
Dab tsi ntawm daim ntawv cog lus yog aluminium thiab oxygen?
Hauv zaj lus qhia no, peb tau kawm tias aluminium oxide yog ib qho ionic compound tsim ntawm txhuas hlau thiab oxygen. Ionic compounds tshwm sim ntawm cov hlau thiab cov hlau tsis muaj hlau thiab koom nrog kev sib pauv ntawm electrons ntawm ob lub atoms
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
Dab tsi atomic lossis hybrid orbitals ua rau sigma daim ntawv cog lus ntawm C thiab O hauv carbon dioxide co2?
Lub hauv paus carbon atom muaj ib tug trigonal planar kev npaj ntawm cov electron khub uas yuav tsum tau sp2 hybridization. Ob lub C − H sigma bonds yog tsim los ntawm kev sib tshooj ntawm sp2 hybrid orbitals los ntawm carbon nrog hydrogen 1s atomic orbitals. Ob daim ntawv cog lus ntawm carbon thiab oxygen muaj ib qho σ ib π daim ntawv cog lus
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