Dispersion rog Dispersion rog London dispersion rog (LDF, tseem hu ua dispersion rog, London rog, instantaneous dipole-induced dipole rog, Fluctuating Induced Dipole Bonds los yog xoob li van der Waals rog) yog a hom quab yuam ua ntawm atoms thiab molecules uas ib txwm muaj hluav taws xob sib luag; uas yog, cov electrons yog … https://en.wikipedia.org › wiki › London_dispersion_force
London dispersion force - Wikipedia
muaj nyob nruab nrab ntawm ob lub molecules (txawm tias polar molecules polar molecules Hauv chemistry, polarity yog kev sib cais ntawm hluav taws xob ua rau lub molecule lossis nws cov tshuaj lom neeg muaj lub sijhawm hluav taws xob dipole, nrog rau qhov kawg them qhov tsis zoo thiab qhov zoo them kawg. Polar molecules yuav tsum muaj cov polar bonds vim qhov sib txawv ntawm electronegativity ntawm cov atoms sib txuas. https://en.wikipedia.org › wiki › Chemical_polarity
Tshuaj polarity - Wikipedia
) thaum lawv yuav luag kov.
Puas LDFs ib txwm muaj?
London dispersion rog yeej ib txwm muaj, tab sis lawv sib txawv hauv lub zog. Nyob rau hauv lub teeb atoms, lawv yog heev me me, vim hais tias tsis muaj ntau electrons thiab lawv tuav nruj nreem. … Heavy atoms los yog molecules muaj ntau electrons, thiab zog London zog.
Koj qhia li cas yog tias muaj lub zog London tawg?
Cov no yog peb hom kev sib cuam tshuam; London Dispersion Forces uas tsis muaj zog tshaj plaws,uas tshwm sim ntawm nonpolar noble gases thiab tib nqi. Yog li yog tias koj pom ib qho ntawm cov xwm txheej ntawd, qhov ntawd yuav pab koj txheeb xyuas tias nws yog London Dispersion Force.
Thaum twg muaj peev xwm dipole dipole tshwm sim?
Dipole -dipole kev sib cuam tshuam tshwm sim thaum cov nqi ib nrab tsim nyob rau hauv ib lub molecule raug nyiam mus rau qhov sib txawv ib nrab nqi hauv ib qho molecule nyob ze. Polar molecules ua ke kom qhov kawg ntawm ib lub molecule cuam tshuam nrog qhov tsis zoo kawg ntawm lwm cov molecule.
Puas tag nrho cov molecules muaj LDFs?
Dispersion rog yog tam sim no ntawm tag nrho cov molecules (thiab atoms) thiab feem ntau yog ntau dua rau hnyav dua, ntau polarizable molecules thiab molecules nrog thaj chaw loj dua.
