Video: Ib daim ntawv cog lus sawv cev li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv chemistry, a ib daim ntawv cog lus yog tshuaj daim ntawv cog lus nruab nrab ntawm ob lub atom uas muaj ob lub valence electrons. Qhov ntawd yog, the atoms qhia ib khub ntawm electrons qhov twg daim ntawv cog lus daim ntawv. Yog li ntawd, a ib daim ntawv cog lus yog hom covalent daim ntawv cog lus.
Tsuas yog li ntawd, qhov piv txwv ntawm ib daim ntawv cog lus yog dab tsi?
A ib daim ntawv cog lus yog a daim ntawv cog lus nyob rau hauv uas ob lub atoms sib koom ob valence electrons txhua, ua ib tug covalent daim ntawv cog lus . Tag nrho ib daim ntawv cog lus yog linear. Piv txwv ntawm ib daim ntawv cog lus suav nrog C-H, H-H, H-F, thiab ntau ntxiv, feem ntau muaj cov hydrogen atoms. Feem ntau, ib daim ntawv cog lus ua sigma daim ntawv cog lus , qhov twg atomic orbitals overlap ib leeg head-on.
Tsis tas li ntawd, ib daim ntawv cog lus tsim tau li cas? Thaum muaj covalent daim ntawv cog lus nrog ib khub ntawm sib koom electrons, peb hu nws a ib leeg covalent daim ntawv cog lus . Thaum ob khub sib koom, zoo li thaum ob lub pa oxygen atoms tuaj ua ke los ua ib qho molecule ntawm oxygen, peb hu nws ua ob lub ntsiab lus. daim ntawv cog lus . Qhov no txhais tau tias txhua cov pa roj carbon atom tuaj yeem ua tau daim ntawv plaub ib leeg covalent daim ntawv cog lus nrog plaub lwm atoms.
Hais txog qhov no, daim ntawv cog lus ib leeg sawv cev li cas?
A ib leeg covalent bond yog thaum tsuas yog ib khub ntawm electrons sib koom ntawm atoms. Ib sigma daim ntawv cog lus yog muaj zog tshaj hom covalent bond , nyob rau hauv uas lub atomic orbitals ncaj qha sib tshooj ntawm lub nuclei ntawm ob lub atoms.
Dab tsi yog ib qho thiab ob daim ntawv cog lus?
A " ib daim ntawv cog lus "yog qhov tseem ceeb daim ntawv cog lus nruab nrab ntawm ob lub ntsiab lus. A " ob daim ntawv cog lus "yog tsim los ntawm qee lub ntsiab lus thaum lawv cov qauv hluav taws xob tso cai rau ib txheej thib ob ntawm electrons rau daim ntawv cog lus (pib 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
Cov duab ntxoov ntxoo sawv cev li cas hauv daim ntawv qhia pedigree?
Daim duab qhia txog kev sib raug zoo hauv tsev neeg, yog siv. Nyob rau hauv ib tug pedigree, lub voj voog sawv cev rau ib tug poj niam, thiab lub square sawv cev rau ib tug txiv neej. Ib lub voj voog lossis square qhia tau hais tias tus neeg muaj tus cwj pwm uas tau kawm. Kab rov tav uas txuas lub voj voog thiab ib lub xwmfab sawv cev rau kev sib yuav
Daim ntawv qhia dot sawv cev li cas?
Txhais. Dot maps yog siv los pom qhov kev faib tawm thiab qhov ntom ntom ntawm ntau qhov sib cais ntawm cov khoom sib cais, qhov sib piv rau qhov chaw hauv daim duab qhia chaw, tsis yog txhua qhov khoom tau piav qhia tab sis ib lub cim sawv cev rau cov khoom siv tas li