Video: Lub crystalline qauv ntawm cov dej khov yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Crystal qauv
Tus qauv ntawm dej khov Ih yog ib qho ntawm cov dav hlau crinkled uas muaj li ntawm tessellating hexagonal rings, nrog ib tug oxygen atom ntawm txhua vertex, thiab cov npoo ntawm lub nplhaib tsim los ntawm hydrogen bonds.
Ib yam li ntawd, cov dej khov puas muaj cov qauv crystalline?
Raws li ib txwm tshwm sim crystalline inorganic khoom nrog kev txiav txim qauv , ice yog suav tias yog cov ntxhia. Nws muaj qhov tsis tu ncua crystalline qauv Raws li cov molecule ntawm dej, uas muaj ib qho oxygen atom covalently bonded rau ob hydrogen atoms, los yog H-O-H.
dab tsi crystal system ua dej khov rau? Dej khov pom tseeb muaj tsawg kawg yog trigonal symmetry; Tab sis nws tau raug piav qhia ntau yam xws li ditrigonal pyramidal, ditrigonal scalenohedral, ditrigonal bipyramidal, hexagonal bipyramidal, dihexagonal pyramidal, dihexagonal bipyramidal thiab rhombohedral.
Kuj paub, cov qauv dej khov yog dab tsi?
Nyob rau hauv lub solid state ( dej khov ), kev sib cuam tshuam intermolecular ua rau muaj kev txiav txim siab tab sis xoob qauv nyob rau hauv uas txhua oxygen atom yog surrounded los ntawm plaub hydrogen atoms; Ob qho ntawm cov hydrogen atoms yog covalently bonded rau cov pa atom, thiab ob qho tib si (ntawm qhov deb ntev) yog hydrogen bonded rau cov pa atom.
Vim li cas cov dej khov ua hexagonal crystals?
Lawv qhov tseem ceeb daim ntawv derived los ntawm kev npaj ntawm cov dej molecules nyob rau hauv lub dej khov siv lead ua . Thaum qhov kub (thermal motion) tsawg txaus, cov molecules txuas ua ke rau daim ntawv ib tug ruaj khov, qhib lub moj khaum uas muaj ib tug nruj hexagonal symmetry.
Pom zoo:
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