Video: Cov pab pawg twg ntawm cov ntsiab lus tsuas muaj tsis yog hlau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev piav qhia: Pab pawg VIIA yog tsuas yog pab pawg nyob rau hauv periodic table nyob rau hauv uas tag nrho cov cov ntsiab lus yog nonmetals . Qhov no pab pawg muaj F, Cl, Br, Kuv thiab At. Lwm lub npe ntawm qhov no pab pawg yog halogen uas txhais tau tias cov khoom siv ntsev.
Tsis tas li ntawd, pab pawg twg hauv lub rooj zaum muaj tsuas yog nonmetals?
Pawg 13–16: kuv periodic tablecontain ib lossis ntau dua metalloids, ntxiv rau cov hlau, nonmetals , los yog ob leeg. Pab pawg 13 hu ua boron pab pawg , thiab boron yog tus nkaus xwb metalloid hauv qhov no pab pawg . Lwm tus pab pawg 13 lub ntsiab yog hlau.
Ib sab saum toj no, pab pawg twg muaj cov hlau tsis muaj hlau ntau tshaj plaws? (a) Lub Sijhawm 2 muaj tus naj npawb ntau tshaj ofnon - hlau . (b) Lawv lub npe yog boron, carbon, nitrogen, oxygen, fluorine, thiab neon. 5. (a) Pab pawg 2 muaj tus lej siab tshaj ntawm cov tsis - hlau (cov noblegases).
Ib yam li ntawd, pawg twg tsis yog hlau?
Cov tsis yog - hlau los yog tsis yog - nws yog xim hlau cov ntsiab lus; hydrogen (H), carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulfur (sulfer) (S), selenium (Se), (Uuo tej zaum yuav muaj nyob ntawm no) thiab cov pa roj carbon monoxide tsim muaj pes tsawg leeg. me me pab pawg nrog ib kauj ruam zoo li tus qauv mus rau sab laug sab ntawm lub rooj zaum (hydrogen ua tus oddone
Dab tsi yog 22 tsis yog hlau?
Tawm ntawm 22 nre - hlau 10 tsis yog - hlau yog cov khoom 8 (xws li carbon, Sulfur thiab phosphorous), 11 tsis yog - hlau yog gases (xws li hydrogen, nitrogen, oxygen thiab chlorine), tab sis tsuas yog ib qho tsis yog - hlau (bromine) yog kua tsis yog - hlau.
Pom zoo:
Dab tsi yog lub ntsiab lus ntawm ib pab pawg ntawm cov lus teev sijhawm?
Nyob rau hauv chemistry, ib pab pawg (tseem hu ua tsev neeg) yog ib kem ntawm cov ntsiab lus nyob rau hauv lub sij hawm lub sij hawm ntawm cov tshuaj. Muaj 18 pawg lej nyob rau hauv daim ntawv teev sijhawm; cov kab f-block (nruab nrab ntawm pawg 3 thiab 4) tsis suav nrog
Dab tsi feem ntau yog pab pawg ua haujlwm thiab vim li cas cov pab pawg no tseem ceeb?
Cov pab pawg ua haujlwm tau txuas mus rau carbonbackbone ntawm cov organic molecules. Lawv txiav txim siab tus yam ntxwv thiab tshuaj lom neeg reactivity ntawm molecules. Cov pab pawg ua haujlwm tsis tshua muaj kev ruaj ntseg dua li cov pa roj carbon monoxide thiab zoo li yuav koom nrog cov tshuaj tiv thaiv
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
Pab pawg twg ntawm cov nroj tsuag muaj nplooj thiab stems tab sis tsis muaj tseeb hauv paus?
Bryophytes tsis muaj keeb kwm, nplooj lossis stems. Moss thiab liverwort belongs rau pawg no. Lawv yog cov nroj tsuag tsis muaj paj uas loj hlob hauv clumps. Lawv tsis muaj cag
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog