Video: Cov hlau twg tsis muaj zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsib pawg ntawm cov hlau:
Noble Metals pom tau tias yog cov hlau ntshiab vim tias lawv tsis muaj zog thiab tsis ua ke nrog lwm cov ntsiab lus los tsim cov tebchaw. Vim tias lawv tsis muaj zog, lawv tsis corrode yooj yim. Qhov no ua rau lawv zoo tagnrho rau cov hniav nyiaj hniav kub thiab npib. Noble hlau muaj xws li tooj liab, palladium , nyiaj , platinum , thiab kub.
Dhau li ntawm qhov no, dab tsi yog cov hlau tsis muaj zog tshaj plaws?
Cov feem ntau reactive nonmetals nyob rau sab xis sab xis ntawm lub periodic rooj. Txij li thaum cov pa roj yog ib pab pawg tshwj xeeb vim lawv tsis muaj reactivity, lub caij fluorine yog cov feem ntau reactive nonmetal. Nws tsis pom nyob rau hauv qhov xwm txheej raws li lub caij dawb.
Qhov thib ob, pab pawg twg tsis muaj zog? Noble gases muaj nyob rau hauv pab pawg 18 ntawm lub periodic table. Cov ntsiab lus no muaj tus lej oxidation ntawm 0. Qhov no tiv thaiv lawv los ntawm kev tsim cov tebchaw yooj yim. Tag nrho cov noble gases muaj 8 electrons nyob rau hauv lawv lub plhaub sab nrauv, ua rau lawv ruaj khov thiab siab heev tsis yog - reactive.
Xav txog qhov no, tsis yog hlau Reactive lossis nonreactive?
Nonmetals yog cov khoom uas feem ntau ua tsis tau hluav taws xob. Cov khoom ntawm nonmetals suav nrog qhov ntsuas kub qis, ntau heev nonmetals yog gases. Nonmetals kuj tsis zoo conductors ntawm tshav kub, thiab khoom nonmetals yog npub thiab nkig. Ib txhia nonmetals yog heev reactive , hos lwm tus tsis yog reactive tag nrho.
Qhov twg hlau yog reactive tshaj plaws?
cesium
Pom zoo:
Cov hlwb twg tsis muaj nucleus thiab tsis muaj chromosomes?
Ib lub cell uas tsis muaj nucleus yog ib lub cell prokaryotic. Nws tsuas muaj cov khoom siv caj ces (DNA) hauv nws tab sis tsis muaj daim nyias nyias nyias nyias
Qhov laj thawj twg zoo tshaj plaws piav qhia vim li cas cov hlau tsis muaj ductile es tsis nkig?
Cov hlau yog ductile es tsis txhob nkig vim tias lawv muaj cov ntawv cog lus hloov tau. Ductility txhais tau hais tias muaj peev xwm ntawm cov hlau los kos rau hauv cov xov hlau. Cov hlau muaj cov khoom sib txuas yooj yim. Qhov kev hloov pauv no tso cai rau lawv ua cov khoom siv
Cov pab pawg twg ntawm cov ntsiab lus tsuas muaj tsis yog hlau?
Kev piav qhia: Pawg VIIA yog tib pawg hauv lub sijhawm uas txhua lub ntsiab lus yog nonmetals. Cov pab pawg no muaj F, Cl, Br, I thiab At.Lwm lub npe ntawm pab pawg no yog halogen uas txhais tau tias cov khoom siv ntsev
Thaum twg muaj zog acid yog titrated nrog lub hauv paus tsis muaj zog?
Titration ntawm lub hauv paus tsis muaj zog nrog lub zog acid. Nyob rau hauv ib qho tsis muaj zog hauv paus-muaj zog acid titration, cov kua qaub thiab lub hauv paus yuav hnov mob los tsim cov kua qaub. Lub conjugate acid yuav raug tsim thaum lub sij hawm titration, uas tom qab ntawd reacts nrog dej los tsim hydronium ions. Qhov no ua rau muaj kev daws teeb meem nrog pH qis dua 7
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