Video: Dab tsi ntawm cov hlau hauv qab no yog alkaline ntiaj teb hlau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov tswv cuab ntawm lub 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. Thaum tsis zoo li reactive li cov alkali hlau , tsev neeg no paub yuav ua li cas thiaj tau nyiaj tau yooj yim heev.
Kuj nug, uas alkaline ntiaj teb hlau yog hlau tshaj plaws?
Cov feem ntau yog xim hlau lub ntsiab yog francium. Txawm li cas los xij, francium yog cov khoom tsim los ntawm tib neeg, tshwj tsis yog rau ib qho isotope, thiab tag nrho cov isotopes yog cov xov tooj cua uas lawv yuav luag tam sim ntawd lwj mus rau lwm lub caij. Lub ntuj tsim nrog lub siab tshaj plaws nws yog xim hlau tus cwj pwm yog cesium, uas pom ncaj qha saum francium ntawm lub rooj zaum.
Ib sab saum toj no, pab pawg twg yog alkaline ntiaj teb hlau nyob hauv? Cov alkaline ntiaj teb hlau yog rau chemical cov ntsiab lus hauv pab pawg 2 ntawm lub sijhawm teem sijhawm. Lawv yog beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), thiab radium (Ra).
Ntxiv rau qhov no, cov ntsiab lus twg hauv qab no yog hlau?
Daim ntawv teev cov hlau
| NUMBER | SYMBOL | TSEEM CEEB |
|---|---|---|
| 3 | Li | Lithium |
| 4 | Ua | Beryllium |
| 11 | Na | Sodium |
| 12 | Mg | Magnesium |
Qhov twg alkaline ntiaj teb hlau yog soluble tshaj plaws?
Calcium , barium, thiab strontium -tag nrho cov alkaline ntiaj teb hlau-tsim soluble hydroxides uas yog cov hauv paus muaj zog tab sis tsis ruaj khov dua li cov alkali hydroxides. Ntawm no, calcium hydroxide, Ca (OH)2, feem ntau hu ua slaked txiv qaub, yog feem ntau.
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")
Vim li cas kev taw qhia ntawm cov kab hlau nplaum yog los ntawm sab qaum teb mus rau sab qab teb?
Thaum nws los txog rau hlau nplaum, opposites nyiam. Qhov tseeb no txhais tau hais tias sab qaum teb kawg ntawm cov hlau nplaum nyob rau hauv ib lub compass yog attracted rau sab qab teb magnetic ncej, uas nyob ze rau thaj tsam qaum teb ncej. Cov kab hlau nplaum sab nraud ntawm cov hlau nplaum ruaj khov ib txwm khiav ntawm sab qaum teb sib nqus ncej mus rau sab qab teb magnetic ncej
Cov hlau tsis tshua muaj hauv ntiaj teb yog dab tsi hauv xov tooj ntawm tes?
Cov xov tooj smartphones kuj tseem muaj ntau yam ntawm lub ntiaj teb tsis tshua muaj - cov ntsiab lus uas muaj ntau nyob hauv lub ntiaj teb pob zeb tab sis nyuaj heev rau kuv thiab rho tawm kev lag luam - suav nrog yttrium, lanthanum, terbium, neodymium, gadolinium thiab praseodymium
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
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")