Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?
Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?

Video: Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?

Video: Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?
Video: Nahum 2~3, Habakkuk 1~3 | 1611 KJV | Day 261 2024, Kaum ib hlis
Anonim

valance: Tag nrho cov alkali hlau muaj ib tug electron nyob rau hauv lawv lub plhaub sab nraud thiab tag nrho cov alkaline ntiaj teb hlau muaj ob sab electrons. Yuav kom ua tiav qhov kev teeb tsa noble gas, alkali hlau yuav tsum poob ib qho hluav taws xob (valence yog "ib"), hos alkaline ntiaj teb hlau yuav tsum tshem tawm ob lub electrons (valence yog "ob").

Ib yam li ntawd ib tug yuav nug, dab tsi alkali hlau thiab alkaline ntiaj teb hlau muaj sib xws?

Dab tsi tseem ceeb yam ntxwv ua tus alkali hlau thiab alkaline ntiaj teb hlau muaj nyob rau hauv ntau ? Alkali hlau thiab alkaline ntiaj teb hlau ob leeg muaj khaus tshuaj reactivity rau huab cua thiab dej. Yog vim li cas cov alkali hlau heev reactive? Alkali hlau yog reactive heev vim lawv muaj ib tug valence electron.

Qhov thib ob, vim li cas lawv thiaj hu ua alkaline ntiaj teb hlau? Lawv yog hu ua alkaline earth metals vim lawv daim ntawv alkaline daws (hydroxides) thaum lawv react nrog dej. Yog li pib, lo lus no alkaline txhais tau hais tias cov tshuaj muaj pH ntau dua xya thiab yog qhov yooj yim. Lub Sij Hawm Lub Sij Hawm: Vim li cas pawg 2A cov ntsiab lus hu ua alkaline ntiaj teb hlau ?

Ib yam li ntawd, koj tuaj yeem nug, qhov txawv ntawm alkali thiab alkaline yog dab tsi?

Ob leeg muaj cov yam ntxwv tseem ceeb. Thaum ntxiv rau dej, ob qho tib si tuaj yeem tsim cov kev daws teeb meem uas muaj pH siab dua (> pH). Lub ntsiab qhov sib txawv ntawm alkali thiab alkaline yog tias alkali hlau muaj ib tug valence electron whereas alkaline ntiaj teb hlau muaj ob valence electrons.

Qhov twg alkaline ntiaj teb hlau yog reactive tshaj plaws?

Alkaline ntiaj teb hlau . Cov alkaline ntiaj teb hlau yog qhov thib ob feem ntau reactive tsev neeg ntawm cov ntsiab lus . Beryllium, magnesium, calcium, strontium, barium thiab radium yog txhua yam ci, thiab silvery-dawb. Lawv tag nrho cov muaj tsawg densities, melting ntsiab lus thiab boiling ntsiab lus, thiab lawv yuav daim ntawv kev daws teeb meem nrog ib tug pH siab tshaj 7.

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