Cov txheej txheem:
Video: Dab tsi yog alkaline ntiaj teb hlau siv rau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Siv ntawm Alkaline ntiaj teb Cov tshuaj
Txij li thaum magnesium hlawv ci ntsa iab, nws yog siv hauv flares thiab foob pob hluav taws. Magnesium alloys nrog aluminium muab lub teeb yuag thiab cov ntaub ntawv ruaj khov rau cov dav hlau, cuaj luaj, thiab foob pob hluav taws. Muaj cov tshuaj antacids siv magnesium hydroxide rau neutralize ntau lub plab acid.
Hauv qhov no, dab tsi tshwj xeeb txog alkaline ntiaj teb hlau?
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). Thaum tsis zoo li reactive li alkali hlau , tsev neeg no paub yuav ua li cas thiaj tau nyiaj tau yooj yim heev. Txhua ntawm lawv muaj ob lub electrons nyob rau hauv lawv lub plhaub sab nraud.
Qhov thib ob, vim li cas alkaline ntiaj teb hlau hu ua qhov ntawd? Lawv yog hu ua alkaline earth metals vim lawv tsim alkaline kev daws teeb meem (hydroxides) thaum lawv hnov mob 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.
Yog li, dab tsi yog 3 daim ntawv thov ntawm alkaline ntiaj teb hlau?
Kev siv cov alkaline ntiaj teb hlau
- Beryllium.
- 1) Nws yog siv rau hauv kev tsim cov alloys.
- 2) Hlau beryllium yog siv los ua Windows ntawm X-ray raj.
- Magnesium.
- 1) Nws yog siv los npaj cov alloy nrog txhuas, zinc, manganese thiab tin.
- 2) Magnesium - aluminium alloy ua lub teeb nyob rau hauv huab hwm coj yog siv nyob rau hauv kev tsim kho ntawm aircraft.
Nyob qhov twg alkaline ntiaj teb hlau pom?
Cov alkaline ntiaj teb hlau yog tag nrho cov cov ntsiab lus nyob rau hauv kab thib ob (kem 2A) ntawm lub sijhawm teem caij. Cov pab pawg no suav nrog beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) thiab radium (Ra). Alkaline ntiaj teb hlau tsuas muaj ob lub electrons nyob rau hauv lawv cov txheej txheem sab nraud.
Pom zoo:
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
Dab tsi yog lub ntiaj teb alkaline hlau nyob rau lub sijhawm 6?
Lub sij hawm 6 lub caij yog ib qho ntawm cov tshuaj nyob rau hauv kab thib rau (lossis lub sij hawm) ntawm lub sij hawm ntawm lub ntsiab lus, suav nrog cov lanthanides. Atomic yam ntxwv. Chemical element 56 Ba Barium Chemical series Alkaline earth metal Electron configuration [Xe] 6s2
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")
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
Dab tsi alkaline ntiaj teb hlau yog feem ntau reactive nrog dej?
Cov hlau alkali (Li, Na, K, Rb, Cs, thiab Fr) yog cov hlau reactive tshaj plaws nyob rau hauv lub sij hawm lub sij hawm - lawv tag nrho cov hnov mob heev los yog txawm explosively nrog dej txias, uas ua rau lub displacement ntawm hydrogen