Dab tsi ua rau lub ntsiab lus ntau dua electronegative?
Dab tsi ua rau lub ntsiab lus ntau dua electronegative?

Video: Dab tsi ua rau lub ntsiab lus ntau dua electronegative?

Video: Dab tsi ua rau lub ntsiab lus ntau dua electronegative?
Video: Koj lub siab yog dab tsi ua? 8/3/2017 2024, Kaum ib hlis
Anonim

Electronegativity hais txog lub peev xwm ntawm ib qho atom los nyiam sib koom electrons hauv covalent daim ntawv cog lus. Qhov siab dua tus nqi ntawm cov electronegativity , cov ntau zog ntawd keeb attracts cov electrons sib koom. Yog li ntawd, fluorine yog cov tshuaj feem ntau electronegative element , thaum francium yog ib qho tsawg kawg nkaus electronegative.

Ntawm no, dab tsi ua rau ib yam dab tsi ntxiv electronegative?

Electronegativity yog ib qho kev ntsuas ntawm atom lub peev xwm los nyiam cov electrons sib koom ntawm covalent daim ntawv cog lus rau nws tus kheej. Yog tias ob lub atoms ntawm daim ntawv cog lus sib npaug electronegativity , cov electrons sib npaug sib npaug. Yog tias ib qho atom yog ntau electronegative , cov electrons ntawm daim ntawv cog lus yog ntau attracted rau ntawd atom.

Tsis tas li ntawd, dab tsi ua rau lub atom muaj lub siab electronegativity? Piav: Lub electronegativity tus nqi yog siab thaum cov nyhuv shielding ntsib los ntawm cov electron nyob rau hauv nqe lus nug yog tsawg thiab valence plhaub ntawm lub atom yog tag nrho los yog yuav luag tag nrho. Qhov no tshwm sim hauv Nws nucleus muaj siab dua tswj nws valence electron dua li Cesium tshaj nws valence electron.

Ua raws li qhov no saib, dab tsi txiav txim siab qhov electronegativity ntawm ib lub caij?

Electronegativity , cim χ, yog cov khoom siv tshuaj lom neeg uas piav txog qhov nyiam ntawm ib qho atom kom nyiam ib khub ntawm electrons (los yog electron ceev) ntawm nws tus kheej. Ib atom lub electronegativity yog cuam tshuam los ntawm ob qho tib si nws tus lej atomic thiab qhov kev ncua deb ntawm nws cov valence electrons nyob ntawm tus nqi nucleus.

Yuav ua li cas electronegativity nce ntawm lub sij hawm?

Qhov zoo them protons hauv lub nucleus nyiam cov electrons tsis zoo. Raws li tus naj npawb ntawm protons nyob rau hauv lub nucleus nce , cov electronegativity los yog attraction yuav nce . Yog li ntawd electronegativity nce los ntawm sab laug mus rau sab xis nyob rau hauv ib kab nyob rau hauv lub daim ntawv qhia hnub.

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