Video: Vim li cas alkali thiab alkaline ntiaj teb hlau yog ntau reactive?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog vim li cas alkaline ntiaj teb hlau tsawg reactive tshaj alkali hlau ? A: Nws yuav siv sij hawm ntau lub zog 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 valence electrons tsawg reactive tshaj alkali hlau nrog lawv ib tug valence electron.
Ib yam li ntawd, vim li cas alkali thiab alkaline ntiaj teb hlau yog reactive?
Alkali thiab alkaline ntiaj teb hlau yog reactive vim yog valence electrons ntawm lub plhaub sab nraud. Alkali hlau muaj 1 electron ntawm lawv lub plhaub sab nrauv, yog li lawv poob lawv cov hluav taws xob yooj yim los ua kom tiav txoj cai octet, piv txwv li: Ib yam li cov alkaline ntiaj teb hlau.
Qhov thib ob, vim li cas cov hlau hloov pauv tsis tshua muaj zog dua li alkali thiab alkaline ntiaj teb hlau? Piv nrog rau alkali hlau hauv pawg 1 thiab cov alkaline ntiaj teb hlau hauv group 2, kev hloov hlau muaj ntau tsawg reactive . Lawv tsis hnov mob sai nrog dej lossis oxygen, uas piav qhia vim li cas lawv tiv thaiv corrosion. Lwm yam khoom ntawm lub kev hloov hlau yog tshwj xeeb.
Ib yam li ntawd, nws raug nug, vim li cas cov hlau alkali ntau dua reactive?
Alkali hlau yog cov feem ntau reactive hlau . Qhov no yog vim ib feem ntawm lawv cov atomic radii loj dua thiab qis ionization energies. Lawv nyiam pub lawv cov hluav taws xob hauv cov tshuaj tiv thaiv thiab muaj lub xeev oxidation ntawm +1. Tag nrho cov yam ntxwv no tuaj yeem raug ntaus nqi rau cov ntsiab lus 'loj atomic radii thiab tsis muaj zog hlau sib txuas.
Puas yog alkaline ntiaj teb hlau reactive?
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 raws 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.
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
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