Video: Lub ntsiab lus ntawm polarity ntawm dej yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dej yog ib " polar "Molecules, lub ntsiab lus tias muaj kev faib tsis sib npaug ntawm electron ceev. Dej muaj ib feem tsis zoo nqi () nyob ze ntawm cov pa atom vim cov unshared khub ntawm electrons, thiab ib nrab nqi zoo () nyob ze hydrogen atoms.
Ua ke, yog dej polar lossis nonpolar?
Dej (H2O) yog polar vim qhov khoov zoo ntawm cov molecule. Yog vim li cas cov duab ntawm cov molecule tsis linear thiab tsis muaj polar (e.g., li CO2) yog vim qhov sib txawv ntawm electronegativity ntawm hydrogen thiab oxygen.
Ib sab saum toj no, piv txwv polarity yog dab tsi? Piv txwv ntawm Polar Molecules Cov pa oxygen sab ntawm lub molecule muaj qhov tsis zoo me ntsis, thaum sab nrog hydrogen atoms muaj qhov zoo me ntsis. Ethanol yog polar vim tias cov pa atoms nyiam electrons vim lawv cov electronegativity ntau dua li lwm cov atoms hauv cov molecule. Ammonia (NH3) yog polar.
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.
Dab tsi ua rau polarity?
Hauv chemistry, polarity yog ib qho kev sib cais ntawm cov nqi hluav taws xob ua rau cov molecule lossis nws cov chemical pawg muaj lub sijhawm hluav taws xob dipole, nrog rau qhov tsis zoo them kawg thiab qhov zoo them kawg. Polar molecules yuav tsum muaj polar bonds vim qhov sib txawv hauv electronegativity ntawm cov atoms sib txuas.
Pom zoo:
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