Video: Cov alkali hlau tuaj qhov twg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub npe tsis tseem ceeb " alkali hlau " los los ntawm qhov tseeb tias hydroxides ntawm pawg 1 cov ntsiab lus yog tag nrho cov muaj zog alkalis thaum yaj hauv dej.
Tsis tas li ntawd, lub npe alkali hlau los ntawm qhov twg?
Lo lus " alkali "tau txais nws npe los ntawm lo lus Arabic "al qali," lub ntsiab lus "los ntawm tshauv", uas txij li cov ntsiab lus no hnov mob nrog dej los tsim cov hydroxide ions, tsim cov tshuaj alkaline (pH> 7).
Qhov thib ob, ua li cas alkali hlau tsim? Alkali hlau . Alkali hlau nyiam poob ib electron thiab daim ntawv ions nrog ib tus nqi zoo. Lawv daim ntawv ionic compounds (ntsev) hauv cov tshuaj tiv thaiv nrog cov halogens ( alkali halides). Sodium thiab potassium ions daim ntawv Cov khoom tseem ceeb ntawm lub cev kua (electrolytes).
Ntawm no, nyob qhov twg alkali hlau pom nyob rau hauv cov xwm?
Alkali hlau yog thawj pab pawg nyob rau hauv lub sij hawm. Lawv yeej tsis yog pom nyob rau hauv qhov uncombined vim tias lawv tsis ruaj khov thiab lawv hnov mob nrawm rau lwm yam. Lawv sib raug zoo nrog tag nrho cov ntsiab lus tshwj tsis yog cov noble gases.
Puas yog hydrogen yog alkali hlau?
Hydrogen yog ib qho tshwj xeeb heev ntawm lub sij hawm lub rooj thiab tsis yog ib tsev neeg. Thaum hydrogen zaum hauv pab pawg I, nws tsis yog ib qho alkali hlau.
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")
Cov ntsiab lus hnyav dua hlau tuaj qhov twg?
Ntau lub ntsiab lus hnyav dua hlau yog tsim supernova tawg. Tus nqi ntawm lub zog tso tawm thaum lub sij hawm supernova tawg yog siab heev uas lub zog pub dawb thiab cov neutrons dawb streaming los ntawm cov tub ntxhais sib tsoo ua rau muaj kev cuam tshuam loj heev, ntev dhau los ntawm kev tsim cov hlau
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
Cov yam ntxwv twg ntawm cov hlau atoms pab piav qhia vim li cas valence electrons hauv cov hlau yog delocalized?
Ib daim ntawv cog lus hlau yog kev sib koom ntawm ntau cov khoom siv hluav taws xob sib cais ntawm ntau cov ions zoo, qhov twg cov electrons ua raws li 'cov kua nplaum' muab cov khoom tsim nyog. Nws tsis zoo li covalent lossis ionic bonding. Cov hlau muaj zog ionization tsawg. Yog li ntawd, valence electrons tuaj yeem raug delocalized thoob plaws hauv cov hlau
Puas yog alkali hlau thiab alkaline ntiaj teb hlau zoo ib yam?
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. Yuav kom ua tiav cov kev teeb tsa muaj txiaj ntsig 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")