Qhov sib txawv tseem ceeb ntawm Lewis dot cim thiab Lewis qauv yog Lewis dot cim sawv cev rau cov hluav taws xob nyob rau sab nraud ntawm lub plhaub hluav taws xob ntawm ib lub atom hauv ib lub molecule whereas Lewis qauv sawv cev rau cov qauv ntawm cov molecules siv cov cim rau tshuaj lom neeg thiab cov cim cim.
Lewis qauv yog ib qho qauv yooj yim uas sawv cev rau cov khoom siv tshuaj lom neeg thiab cov khoom siv hluav taws xob hauv ib qho yooj yim molecules. Lub cim Lewis dot sawv cev rau ib qho hluav taws xob; yog li ntawd, peb yuav tsum siv ob lub dots los sawv cev rau ib daim ntawv cog lus tshuaj.
Lewis Dot Symbol yog dab tsi?
Lewis dot cim sawv cev rau ib qho hluav taws xob. Yog li ntawd, yog hais tias peb yuav tsum tau qhia ib tug tshuaj daim ntawv cog lus nyob rau hauv ib tug molecule, ces peb yuav tsum tau siv ob electrons ua ib khub txij li thaum ib tug tshuaj daim ntawv cog lus thaum ob electrons los ntawm ob txawv atoms ua ke. Tsis tas li ntawd, peb yuav tsum siv ob lub dots los qhia ib leeg electron khub. Cov cim dot tau muab tso rau ib puag ncig lub cim ntawm cov tshuaj lom neeg uas cov atom tshwj xeeb yog. Piv txwv li, peb tuaj yeem muab cov electron ntawm hydrogen atom raws li hauv qab no:
Daim duab 01: Electron ntawm Hydrogen Atom
Lewis Structure yog dab tsi?
Lewis qauv yog ib qho sawv cev ntawm cov qauv yooj yim siv cov cim dot. Cov cim dot no sawv cev rau cov khoom siv hluav taws xob ntawm sab nraud ntawm cov atoms hauv cov molecule. Thaum kos tus qauv Lewis, ua ntej peb yuav tsum nrhiav tus naj npawb ntawm valence electrons ntawm tag nrho cov atoms nyob rau hauv lub molecule. Tom qab ntawd, peb yuav tsum nrhiav tus naj npawb ntawm cov hluav taws xob uas ua rau lub plhaub sab nraud, ua raws li txoj cai octet. Tom qab ntawd, peb yuav tsum txiav txim siab seb cov tshuaj muaj pes tsawg leeg uas muaj nyob hauv cov molecule, thiab peb kuj yuav tsum xyuas seb lawv puas nyob hauv ib daim ntawv cog lus, ob daim ntawv cog lus thiab triple daim ntawv cog lus.
Ntxiv mus, peb yuav tsum txiav txim siab lub hauv paus atom rau cov molecule nyob ntawm seb lub electronegativity ntawm cov atoms. Ntawm no, lub atom uas muaj qhov tsawg tshaj plaws electronegativity yog coj raws li lub hauv paus atom. Tom qab ntawd peb tuaj yeem kos ib lub cev pob txha rau cov molecule no. Rau qhov sawv cev ntawm lub cev pob txha, peb tuaj yeem siv cov cim ntawm cov tshuaj lom neeg thiab cov cim dot. Peb yuav tsum siv ob lub dots thaum sawv cev rau ib daim ntawv cog lus tshuaj thiab tom qab muab cov khoom siv hluav taws xob rau cov ntawv cog lus, cov khoom siv hluav taws xob ntxiv tuaj yeem sawv cev ua ib leeg electron khub.
Cia peb xav txog ib qho piv txwv txhawm rau nkag siab txog txheej txheem ntawm kev kos duab Lewis. Cov kauj ruam rau kos tus qauv Lewis rau methane molecule yog raws li nram no:
Daim duab 02: Lewis Cov Qauv ntawm Methane Molecule
- Cov tshuaj formula ntawm methane yog CH4.
- Cov pa roj carbon atom tsawg dua electronegative dua li hydrogen atom. Yog li ntawd, lub hauv paus atom ntawm lub molecule yog carbon.
- Nws muaj plaub lub tshuab hluav taws xob hauv lub plhaub sab nraud.
- Muaj plaub lub atom hydrogen nyob ib ncig ntawm lub hauv paus carbon atom. Plaub lub hydrogen atoms xav tau plaub lub electrons los ntawm carbon atom los tsim ib daim ntawv cog lus tshuaj. Yog li ntawd, tag nrho plaub lub valence electrons ntawm carbon atoms koom nrog hauv kev sib raug zoo, thiab tsis muaj ib leeg electron khub nyob ib ncig ntawm carbon atom nyob rau hauv no molecule.
Qhov txawv ntawm Lewis Dot Symbol thiab Lewis Structure yog dab tsi?
Lewis qauv yog cov qauv yooj yim uas sawv cev rau cov tshuaj lom neeg thiab cov khoom siv hluav taws xob ib leeg hauv cov molecules yooj yim. Qhov sib txawv tseem ceeb ntawm Lewis dot cim thiab Lewis qauv yog lub cim Lewis dot sawv cev rau cov hluav taws xob nyob rau sab nraud ntawm lub plhaub hluav taws xob ntawm lub atom hauv cov molecule, qhov Lewis qauv sawv cev rau cov qauv ntawm cov molecules siv cov cim rau cov khoom siv tshuaj thiab cov cim dot.
Hauv qab no yog ib sab ntawm kev sib piv ntawm qhov sib txawv ntawm Lewis dot cim thiab Lewis qauv.
Summary – Lewis Dot Symbol vs Lewis Structure
Lewis qauv yog cov qauv yooj yim uas sawv cev rau cov tshuaj sib txuas thiab cov khoom siv hluav taws xob ib leeg hauv cov molecules yooj yim. Qhov sib txawv tseem ceeb ntawm Lewis dot cim thiab Lewis qauv yog tias Lewis dot cim sawv cev rau cov hluav taws xob nyob rau sab nraud ntawm lub plhaub hluav taws xob ntawm lub atom hauv ib lub molecule. Lub caij no, tus qauv Lewis sawv cev rau cov qauv ntawm cov molecules siv cov cim rau tshuaj lom neeg thiab cov cim cim
