Leej twg nrhiav tau boron ntawm lub sij hawm?
Leej twg nrhiav tau boron ntawm lub sij hawm?

Video: Leej twg nrhiav tau boron ntawm lub sij hawm?

Video: Leej twg nrhiav tau boron ntawm lub sij hawm?
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Anonim

Boron tau pom thawj zaug raws li lub ntsiab lus tshiab hauv xyoo 1808. Nws tau tshawb pom ib txhij los ntawm kws tshuaj Askiv. Humphry Davy thiab Fabkis chemists Joseph L. Gay-Lussac thiab Louis J. Thenard.

Ua raws li qhov no, leej twg nrhiav tau lub ntsiab boron?

Joseph Louis Gay-Lussac Humphry Davy Louis Jacques Thénard

Tom qab ntawd, lo lus nug yog, dab tsi yog boron ntawm lub sij hawm? Boron yog tshuaj keeb nrog lub cim B thiab atomic tooj 5. Ob peb allotropes ntawm boron muaj: amorphous boron yog xim av hmoov; crystalline boron yog silvery rau dub, nyuaj heev (kwv yees li 9.5 ntawm lub Mohs nplai), thiab ib tug tsis zoo hluav taws xob conductor nyob rau hauv chav tsev kub.

Hais txog qhov no, lub caij boron tau pom thawj zaug li cas?

Boron yog nrhiav pom los ntawm Joseph-Louis Gay-Lussac thiab Louis-Jaques Thénard, Fabkis chemists, thiab nws tus kheej los ntawm Sir Humphry Davy, ib tug kws tshuaj lus Askiv, nyob rau hauv 1808. Lawv tag nrho cov cais. boron los ntawm kev sib xyaw boric acid (H3BO3) nrog poov tshuaj.

boron nyob qhov twg?

Boron tsis muaj nyob rau hauv qhov xwm txheej hauv daim ntawv. Nws muaj nyob rau hauv borax, boric acid, kernite, ulexite, colemanite thiab borates. Vulcanic caij nplooj ntoos hlav dej qee zaum muaj boric acids. Borates yog mined hauv Teb Chaws Asmeskas , Tibet , Chile thiab Qaib ntxhw , nrog rau ntiaj teb kev tsim khoom yog kwv yees li 2 lab tons hauv ib xyoos.

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