Qhov yooj yim cubic chemistry yog dab tsi?
Qhov yooj yim cubic chemistry yog dab tsi?

Video: Qhov yooj yim cubic chemistry yog dab tsi?

Video: Qhov yooj yim cubic chemistry yog dab tsi?
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CHEMISTRY GLOSSARY

Yooj yim los yog primitive kub lattice (sc kub -P) muaj ib lub pas nrig ntawm txhua lub ces kaum ntawm chav tsev cell. Nws muaj chav cell vectors a = b = c thiab interaxial angels α = β = γ = 90 °. Cov qauv siv lead ua yooj yim tshaj plaws yog cov uas tsuas muaj ib qho atom ntawm txhua qhov taw tes lattice

Hais txog qhov no, cov khoom siv twg muaj cov qauv cubic yooj yim?

hlau Polonium

Tom qab ntawd, lo lus nug yog, pes tsawg atoms nyob rau hauv ib qho yooj yim cubic unit cell? Lub ntsej muag-centered cubic (fcc) muaj kev sib koom tes ntawm 12 thiab muaj 4 atom ua ib lub cell. Lub cev-centered cubic (bcc) muaj kev sib koom tes ntawm 8 thiab muaj 2 atom ua ib lub cell. Qhov yooj yim cubic muaj tus lej sib koom ua ke ntawm 6 thiab muaj 1 atom hauv ib chav cell.

Peb hom cubic unit cells yog dab tsi?

Muaj peb hom cubic unit cell uas yog (i) Yooj Yim kub (ii) Lub cev nyob nruab nrab kub (iii) Lub ntsej muag nyob nruab nrab kub . Cov no unit cell yog tsim los ntawm txawv tus naj npawb ntawm atoms lossis ions, uas yog raws li hauv qab no: (i) Yooj yim kub unit cell : Hauv qhov no, ib qho atom lossis ion nyob ntawm txhua lub ces kaum ntawm lub kub.

Lub cubic unit cell yog dab tsi?

Cov kub unit cell yog qhov tsawg tshaj plaws rov ua dua chav tsev thaum tag nrho cov ces kaum yog 90o thiab txhua qhov ntev yog sib npaug (daim duab 12.1. b) nrog txhua axis raug txhais los ntawm Cartesian coordinate (x, y, z). Txhua kub cell muaj 8 atoms nyob rau hauv txhua lub ces kaum ntawm lub voos xwmfab, thiab lub atom yog sib koom nrog 8 nyob sib ze hlwb.

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