Video: Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Cov alkali hlau thiab alkaline ntiaj teb hlau sib txawv li cas?
Valance: Tag nrho cov alkali hlau muaj ib qho hluav taws xob nyob rau hauv lawv lub plhaub sab nraud thiab tag nrho cov alkaline ntiaj teb hlau muaj ob sab electrons. Txhawm rau kom ua tiav qhov kev teeb tsa tsis zoo, cov hlau alkali yuav tsum poob ib lub tshuab hluav taws xob (valence yog "ib"), thaum alkaline ntiaj teb hlau yuav tsum tshem tawm ob lub electrons (valence yog "ob")
Muaj pes tsawg valence electrons pom nyob rau hauv halogens cov alkali hlau thiab alkaline ntiaj teb hlau?
Cov halogens tag nrho muaj cov txheej txheem hluav taws xob dav dav ns2np5, muab rau lawv xya valence electrons. Lawv yog ib qho hluav taws xob luv luv uas muaj tag nrho sab nrauv s thiab p sublevels, uas ua rau lawv muaj zog heev. Lawv tau txais cov tshuaj tiv thaiv tshwj xeeb nrog cov reactive alkali hlau
Vim li cas alkali thiab alkaline ntiaj teb hlau yog ntau reactive?
Vim li cas alkaline ntiaj teb hlau tsis tshua muaj zog dua li alkali hlau? A: Nws yuav siv zog ntau dua los tshem tawm ob lub valence electrons los ntawm ib lub atom tshaj li ib lub valence electron. Qhov no ua rau alkaline ntiaj teb hlau nrog lawv ob lub valence electrons tsawg reactive dua alkali hlau nrog lawv ib valence electron
Qhov txawv ntawm lub ntiaj teb thiab lub ntiaj teb yog dab tsi?
Lub ntiaj teb yog xa mus rau lub ntiaj teb thib peb los ntawm Sol. Planet tsuas yog lub cev xilethi-aus nyob rau hauv orbitaround ib lub hnub qub. Qee lub sij hawm tib neeg siv 'lub ntiaj teb' los siv cov hnub qub THIAB Lub Ntiaj Teb, tab sis lub ntiaj teb kuj tseem siv los ua cov ntsiab lus tshwj xeeb rau tib neeg, tam sim no txij li tib neeg tsuas yog hauv Ntiaj Teb nws zoo li lawv sib tshooj ntau heev
Dab tsi ntawm cov hlau hauv qab no yog alkaline ntiaj teb hlau?
Cov tswv cuab ntawm alkaline ntiaj teb hlau muaj xws li: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) thiab radium (Ra). Ib yam li txhua tsev neeg, cov ntsiab lus no qhia qhov zoo. Txawm hais tias tsis zoo li cov hlau alkali, tsev neeg no paub yuav ua li cas ua cov ntawv cog lus yooj yim heev