Kev piav qhia: Yog tias koj tau kawm tias hlau + nonmetal ⟶ ionic daim ntawv cog lus, cov lus teb yog D, vim N thiab C yog tib khub ntawm nonmetals. Rau Na thiab C, ΔEN=1.62, yog li Na-C daim ntawv cog lus yog ib qho highly polar covalent bond.
Yuav ua li cas koom nrog kev sib cog lus?
Cov nyiaj no zoo li tshwm sim nrog cov ntsiab lus tsis yog hlau ntawm lub sijhawm. Dej yog ib yam khoom paub muaj xws li hydrogen thiab oxygen txuas los ntawm covalent bonds. Cov ntsiab lus no suav tias yog covalent. Lwm cov ntsiab lus uas tuaj yeem tsim cov ntawv cog lus muaj xws li nitrogen, carbon thiab fluorine.
Yuav ua li cas daim ntawv cog lus ntawm Na thiab CI?
hom tshuaj tiv thaiv no yog hu ua ionic daim ntawv cog lusvim tias daim ntawv cog lus tsim ntawm ob ions ntawm cov nqi sib txawv. Cov sodium cation (Na +) thiab cov tshuaj chlorine anion (Cl-) tau sib koom ua ke los tsim sodium chloride, los yog cov ntsev ntsev.
Puas C ua daim ntawv cog lus covalent?
Carbon Forms Covalent Bonds Covalent bonds uas feem ntau tsim los ntawm carbon yog covalent daim ntawv cog lus. Feem ntau, carbon sib koom electrons nrog lwm cov atoms (ib txwm valence ntawm 4). Qhov no yog vim cov pa roj carbon feem ntau khi nrog cov ntsiab lus uas muaj cov electronegativity zoo sib xws.
Yuav ua li cas cov ntawv cog lus carbon tsim?
Carbon forms covalent bonds nrog atoms ntawm carbon los yog lwm yam ntsiab. Muaj ntau qhov sib txawv ntawm cov pa roj carbon monoxide, xws li qhov loj me los ntawm ib mus rau txhiab tus atoms. Cov pa roj carbon muaj plaub qhov hluav taws xob valence, yog li nws tuaj yeem ua tiav tag nrho sab nrauv lub zog los ntawm kev tsim plaub daim ntawv cog lus.
