Video: Leej twg yog tus qauv ntawm ib qho tsis muaj polar molecule uas muaj cov ntawv cog lus nonpolar?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
(1), (3) H2O thiab NH3 yog cov molecules uas muaj polar covalent bonds , tab sis lawv cov khoom siv hluav taws xob tsis sib xws. (4) H2 yog ib tug nonpolar molecule uas muaj ib tug symmetrical tis ntawm electrons, tab sis cov nyiaj ntawm cov hydrogen atoms yog nonpolar covalent.
Yog li ntawd, tus qauv twg uas sawv cev rau cov tsis muaj polar molecules?
A) H2O B) Cov qauv twg sawv cev rau qhov tsis muaj polar molecule uas muaj polar covalent bonds ?
Tsis tas li ntawd, cov molecules twg yog nonpolar vim tias txhua daim ntawv cog lus tsis yog polar? Thiab cov molecules uas yog nonpolar vim hais tias tag nrho cov bonds yog nonpolar Hydrogen (H2), Chlorine (Cl2), Nitrogen (N2), thiab Oxygen (O2) tag nrho cov no tsis muaj polar vim lawv yog tib hom ntsiab thiab lawv ob leeg muaj tib tus lej ntawm electronegativity.
Tsis tas li ntawd, yuav ua li cas lub molecule yuav nonpolar yog hais tias nws muaj polar bonds?
A molecule tau muaj polar bonds thiab tseem yuav tsis muaj polar . Yog tus polar bonds yog sib npaug (los yog symmetrically) faib, cov daim ntawv cog lus dipoles tshem tawm thiab tsis tsim ib qho molecular dipole.
Qhov twg molecule yog nonpolar?
Nonpolar Molecule Piv Txwv Piv txwv ntawm homonuclear nonpolar molecules yog oxygen (O2nitrogen (N2), thiab ozone (O3). Lwm cov nonpolar molecules muaj xws li carbon dioxide ( CO2 ) thiab cov organic molecules methane ( CH4 ), toluene, thiab roj av. Cov pa roj carbon ntau yog cov tsis muaj polar. Ib qho tshwj xeeb tshwj xeeb yog carbon monoxide, CO.
Pom zoo:
Puas yog NaCl muaj daim ntawv cog lus uas tsis muaj polar?
Yog lawm, NaCl yog ib daim ntawv cog lus ionic uas ua rau nws polar. Qhov txawv ntawm electronegativities yog dab tsi ua rau daim ntawv cog lus polar lossis nonpolar. Yog hais tias ob lub atoms nyob rau hauv ib daim ntawv cog lus muaj tib lub electronegativity, (xws li, uas muaj ob ntawm tib lub atoms) daim ntawv cog lus yog nonpolar vim tias ob lub atoms muaj qhov sib npaug ntawm cov electrons
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
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
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule