Tus qauv ntawm covalent bonds yog dab tsi?
Tus qauv ntawm covalent bonds yog dab tsi?

Video: Tus qauv ntawm covalent bonds yog dab tsi?

Video: Tus qauv ntawm covalent bonds yog dab tsi?
Video: Tus qauv moj yam ntawm hmoob 1/13/20 2024, Kaum ib hlis
Anonim

A covalent bond yog tsim thaum ib khub ntawm electrons sib koom ntawm ob atoms. Cov khoom siv hluav taws xob sib koom no muaj nyob hauv cov plhaub sab nraud ntawm cov atoms. Feem ntau, txhua lub atom muab ib qho hluav taws xob rau ib khub ntawm electrons.

Tom qab ntawd, hom qauv twg yog daim ntawv cog lus covalent?

A covalent bond , kuj hu ua molecular daim ntawv cog lus , yog tshuaj daim ntawv cog lus uas koom nrog kev sib koom ntawm cov electron khub ntawm atoms. Cov khub electron no hu ua cov khub sib koom lossis kev sib raug zoo khub, thiab qhov sib npaug ruaj khov ntawm kev txaus siab thiab kev tsis txaus siab ntawm cov atoms, thaum lawv sib koom electrons, yog hu ua covalent bonding.

Ib yam li ntawd, covalent bond thiab piv txwv yog dab tsi? Covalent Bond Piv txwv Txhua tus ntawm covalent bonds muaj ob lub electrons, ib qho los ntawm hydrogen atom thiab ib qho los ntawm oxygen atom. Ob lub atom sib faib cov electrons. Ib qho hydrogen molecule, H2, muaj ob lub hydrogen atoms koom nrog a covalent bond.

Dhau li ntawm no, cov qauv ntawm covalent bonds cuam tshuam li cas rau cov qauv ntawm covalent compound?

Thawj zaug piav los ntawm Gilbert Lewis, a covalent bond tshwm sim thaum electrons ntawm txawv atoms sib koom ntawm ob lub atoms. Cov xwm txheej ntawm electron sib koom tuaj yeem kwv yees los ntawm txoj cai octet. Hauv ib covalent bond , cov electrons sib koom pab txhawb rau txhua lub atom octet thiab yog li txhim khu kev ruaj ntseg ntawm cov compound.

Dab tsi yog 3 hom ntawm covalent bonds?

Cov peb hom raws li tau hais nyob rau hauv lwm cov lus teb yog polar covalent , tsis muaj polar covalent , thiab kev sib koom tes covalent . Thawj, polar covalent , yog tsim los ntawm ob lub nonmetals uas muaj qhov sib txawv hauv electronegativity. Lawv qhia lawv cov electron ceev tsis sib npaug.

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