Nrog lub vojvoog piv ntawm 0.929 (qhov tseem ceeb sib koom ua ke), cov ion me me yuav tsum nyiam lub qhov cubic. Cov duab hauv qab no qhia txog cov qauv ntawm fluorite.
Cov qauv siv lead ua ntawm fluorite yog dab tsi?
Nws muaj lub cubic siv lead ua nrog lub cev-chav qauv. Fluorite tsim cov cubes zoo meej, feem ntau nrog cov menyuam ntxaib nkag. Nws yog feem ntau translucent rau pob tshab, thiab muaj ntau yam xim los ntawm tsis muaj xim mus rau ntsuab, daj, xiav-ntsuab, los yog ntshav. Ib leeg siv lead ua tuaj yeem pom cov xim sib txawv.
Lub vojvoog piv ntawm crystal yog dab tsi?
Qhov kev ruaj ntseg ntawm cov ionic muaju tuaj yeem piav qhia raws li lub vojvoog piv. Yog li ntawd, radius ratio yog qhov piv ntawm cation rau qhov ratio ntawm anion. Ntawm no, Ratio of cation=r, Ratio of anion=R. Yog li, Radius ratio=(r/R). Limiting radius ratio pab qhia qhov ntau ntawm lub vojvoog piv.
Dab tsi yog lub vojvoog piv cuam tshuam?
Ib tus qauv siv lead ua yog txiav txim siab los ntawm qhov piv ntawm ionic radii ntawm nws cov khoom. … Qhov piv txwv no tswj xyuas tus naj npawb ntawm cov ions me. Nyob rau hauv ionic crystals txhua ion yog surrounded los ntawm tus naj npawb ntawm cov oppositely them ions.
txhais li cas los ntawm cov qauv fluorite?
A hom ionic siv lead ua qauv nyob rau hauv uas cov cations muaj kev nthuav dav lub ntsej muag-centred cubic npaj nrog cov anions nyob ob hom tetrahedralqhov. Cov cations muaj tus lej sib koom ntawm 8 thiab cov anions muaj tus lej sib koom ntawm 4.
