Koj yuav piav qhia dav dav li cas rau Lewis dot daim duab?
Koj yuav piav qhia dav dav li cas rau Lewis dot daim duab?

Video: Koj yuav piav qhia dav dav li cas rau Lewis dot daim duab?

Video: Koj yuav piav qhia dav dav li cas rau Lewis dot daim duab?
Video: Ua poj nrauj vim nyiam sib deev. 10/7/2017 2024, Kaum ib hlis
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Lewis cov qauv (tseem hu ua Lewis dot cov qauv los yog electron dot structures) yog daim duab uas sawv cev rau valence electrons ntawm atoms nyob rau hauv ib lub molecule. Cov no Lewis cim thiab Lewis cov qauv pab pom qhov valence electrons ntawm atoms thiab molecules, txawm tias lawv muaj nyob hauv ib leeg lossis hauv cov ntawv cog lus.

Hais txog qhov no, koj yuav piav qhia txog Lewis dot daim duab rau anion li cas?

Lewis electron dot daim duab siv dots los sawv cev valence electrons nyob ib ncig ntawm lub cim atomic. Lewis electron dot daim duab rau ions muaj tsawg (rau cations) lossis ntau dua (rau anions ) dots tshaj qhov sib thooj atom.

Tsis tas li ntawd, polarity txhais li cas? Hauv chemistry, polarity hais txog txoj kev uas atoms sib raug zoo nrog ib leeg. Thaum cov atoms tuaj ua ke hauv cov tshuaj sib txuas, lawv sib koom electrons. A polar molecule tshwm sim thaum ib qho ntawm cov atoms ua kom muaj zog txaus nyiam ntawm cov electrons hauv daim ntawv cog lus.

Ntawm no, koj siv daim duab kos rau dab tsi?

Nyob ntawd yog shorthand txoj kev los sawv cev yuav ua li cas atoms tsim covalent los yog ionic bonds. Lewis dot daim duab siv dots teem ib ncig ntawm lub atomic cim los sawv cev rau cov electrons nyob rau hauv lub outermost zog theem ntawm ib tug atom. Ib daim ntawv cog lus yog sawv cev los ntawm ib khub ntawm dots los yog ib kab ntawm atoms.

Koj nrhiav tau tus nqi them li cas?

Kev Them Nyiaj = [# valence electrons ntawm nruab nrab atom] – [(# ib leeg electron khub) + (½ # bonding electrons)] Valence electrons = sib raug rau cov pab pawg neeg ntawm lub sij hawm (rau cov khoom sawv cev). Lone Pairs = ib leeg electrons zaum ntawm lub atom. Txhua electron suav ua ib qho thiab yog li ib khub suav ua ob.

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