khoom ntiag tug
Nyiaj dawb hlau. Nws yog mos thiab tuaj yeem txiav nrog rab riam. Nws yog cov hlau lightest, thiab nws qhov ntom yog me dua li cov roj thiab cov kua hydrocarbons, yog li nws yuav tsum tau muab cia rau hauv cov khoom siv paraffin lossis vaseline dawb (lithium kuj tseem ntab hauv cov kua paraffin).
Qhov ceev ntawm lithium yog tsawg heev, tsuas yog 0.534g/cm ³, Nws yog qhov tsawg tshaj plaws ntawm cov khoom tsis muaj roj.
Lithium muaj qhov tsawg tshaj plaws compressibility, qhov loj tshaj plaws hardness thiab lub siab tshaj plaws melting point piv nrog rau lwm yam alkali hlau vim nws me me atomic radius.
Thaum qhov kub thiab txias siab tshaj - 117 degree, lithium hlau yog ib tug raug lub cev centered cubic qauv, tab sis thaum kub poob mus rau - 201 degree, nws pib hloov mus rau hauv lub ntsej muag centered cubic qauv. Qhov qis dua qhov kub, qhov ntau dua qhov kev hloov pauv, tab sis qhov kev hloov pauv tsis tiav. Ntawm 20 degree, lub lattice tas li ntawm lithium yog 3.50 ｜, thiab conductance yog li ib feem tsib ntawm cov nyiaj. Lithium yooj yim fuses nrog cov hlau uas tsis yog hlau.
Cov nplaim hluav taws xob ntawm lithium yog ntshav liab. [4]
isotope
Muaj xya isotopes ntawm lithium, ob ntawm cov uas ruaj khov, xws li Li-6 thiab Li-7. Ntxiv rau cov isotopes ruaj khov, qhov ntev tshaj plaws ib nrab ntawm lub neej yog Li-8, uas muaj ib nrab neej ntawm 838 milliseconds, ua raws li Li-9, uas muaj ib nrab neej ntawm 187.3 milliseconds. Lwm cov isotopes muaj ib nrab-lub neej tsawg dua 8.6 milliseconds. Li-4 yog cov isotope nrog qhov luv tshaj ib nrab-lub neej ntawm tag nrho cov isotopes, tsuas yog 7.58043 × 10-23 vib nas this.
Li-6 muaj lub peev xwm los ntes cov neutrons qis thiab tuaj yeem siv los tswj kev ceev ntawm cov tshuaj tiv thaiv nuclear hauv uranium reactors. Nws kuj tseem tuaj yeem siv rau hauv kev tiv thaiv hluav taws xob thiab ua kom lub neej ntev ntawm kev siv hluav taws xob nuclear, nrog rau hauv nuclear powered aircraft thiab spacecraft yav tom ntej. Li-6 tuaj yeem raug irradiated los ntawm neutrons hauv nuclear reactors kom tau tritium, uas tuaj yeem siv los paub txog cov tshuaj tiv thaiv thermonuclear. Li-6 tuaj yeem siv los ua cov dej txias hauv cov khoom siv nuclear
