Qhov sib txawv tseem ceeb ntawm beryllium thiab lithium yog tias beryllium yog cov hlau dawb-grey uas yog diamagnetic, whereas lithium yog silvery-grey hlau uas yog paramagnetic.
Ob leeg beryllium thiab lithium nyob rau tib lub sijhawm, lub sijhawm 2. Txawm li cas los xij, lawv nyob hauv ob pawg sib txawv hauv lub sijhawm. Yog li ntawd, lawv muaj cov khoom sib txawv. Ob lub ntsiab lus tshuaj no yog s-thaiv cov ntsiab lus vim tias lawv muaj lawv cov valence electrons hauv s orbitals.
YBeryllium yog dab tsi?
Beryllium yog alkaline ntiaj teb hlau uas muaj tus lej atomic 4 thiab cov cim tshuaj Be. Piv txwv li, nws yog ib qho tshuaj tsis tshua muaj nyob hauv lub ntiaj teb. Cov hlau no muaj xim dawb-grey. Nws yog s-block keeb vim nws muaj nws cov valence electrons nyob rau hauv lub orbital. Kev teeb tsa hluav taws xob ntawm lub ntsiab lus no yog [Nws] 2s 2 Raws li nws qhov teeb tsa hluav taws xob, beryllium tsim cov cations divalent los ntawm kev tshem ob lub electrons los ntawm 2s orbital.
Beryllium yog cov hlau tawv thiab nkig. Nws muaj ib tug kaw-packed hexagonal siv lead ua system. Cov tawv nqaij ntawm beryllium tau hais tias yog qhov tshwj xeeb. Lub melting point ntawm no hlau yog siab heev. Ntxiv mus, lub elasticity ntawm beryllium yog ntau dua li cov hlau. Cov hlau no yog diamagnetic vim tias nws tsis muaj cov khoom siv hluav taws xob tsis sib xws hauv nws lub xeev hauv av.
Thaum xav txog qhov tshwm sim ntawm beryllium, nws tau pom tias lub hnub muaj txog 0.1 ppb ntawm beryllium thaum lub ntiaj teb concentration ntawm beryllium yog li 2-4 ppm. Peb tuaj yeem pom cov hlau no feem ntau yog xuab zeb. Nws muaj nyob rau hauv dej, tab sis nyob rau hauv ib tug heev tus nqi. Muaj ob lub ntsiab ores ntawm beryllium: beryl thiab bertrandite
Lithium yog dab tsi?
Lithium yog cov hlau alkali muaj atomic naj npawb 3 thiab cov cim tshuaj Li. Raws li qhov loj bang txoj kev xav ntawm kev tsim lub ntiaj teb, lithium, hydrogen thiab helium yog cov tshuaj lom neeg tseem ceeb uas tsim nyob rau theem ntxov ntawm lub ntiaj teb tsim. Lub atomic qhov hnyav ntawm lub caij no yog 6.941, thiab lub teeb tsa hluav taws xob yog [Nws] 2s 1Ntxiv mus, nws belongs rau s block vim nws yog nyob rau hauv pawg 1 ntawm lub sij hawm thiab lub melting. thiab cov ntsiab lus kub ntawm cov khoom no yog 180.50 ° C thiab 1330 ° C, feem. Nws tshwm nyob rau hauv cov xim silvery-dawb, thiab yog hais tias peb hlawv cov hlau no, nws muab ib tug crimson xim nplaim taws.
Tsis tas li ntawd, cov hlau no yog lub teeb thiab mos heev. Yog li ntawd, peb tuaj yeem txiav nws yooj yim siv rab riam. Tsis tas li ntawd, nws tuaj yeem ntab rau hauv dej, thiab yog li, ua rau muaj tshuaj lom neeg tawg. Ntxiv mus, cov hlau no muaj qee yam khoom tshwj xeeb uas lwm cov hlau alkali tsis muaj. Piv txwv li, nws tsuas yog alkali hlau uas tuaj yeem hnov mob nrog cov pa roj nitrogen, thiab nws tsim lithium nitride raws li cov tshuaj tiv thaiv no. Nws yog qhov tsawg tshaj plaws ntawm lwm cov tswv cuab ntawm pab pawg no. Tsis tas li ntawd, nws muaj qhov tsawg kawg nkaus ntawm cov khoom hlau.
Qhov txawv ntawm Beryllium thiab Lithium yog dab tsi?
Ob leeg beryllium thiab lithium nyob rau tib lub sijhawm, lub sijhawm 2. Tab sis, lawv nyob hauv ob pawg sib txawv ntawm lub sijhawm. Yog li ntawd, lawv muaj cov khoom sib txawv. Qhov sib txawv tseem ceeb ntawm beryllium thiab lithium yog tias beryllium yog dawb-grey hlau uas yog diamagnetic, whereas lithium yog silvery-grey hlau uas yog paramagnetic. Beryllium cov ntaub ntawv divalent cations wile Lithium cov ntaub ntawv monovalent cations.
Cov hauv qab no qhia txog qhov sib txawv ntawm beryllium thiab lithium.
Summary – Beryllium vs Lithium
Ob leeg beryllium thiab lithium nyob rau tib lub sijhawm, lub sijhawm 2. Tab sis lawv nyob hauv ob pawg sib txawv hauv lub sijhawm. Yog li ntawd, lawv muaj cov khoom sib txawv. Qhov sib txawv tseem ceeb ntawm beryllium thiab lithium yog tias beryllium yog dawb-grey hlau uas yog diamagnetic, whereas lithium yog silvery-grey hlau uas yog paramagnetic.
